Honda-SOHC
SOHC.co.uk Forums => CB750 => Topic started by: pastyman on April 13, 2011, 07:23:05 PM
-
sorry but i have another couple of problems that i hope you can help me with please
1. when i squeeze the front brake the lever is extremely soft, so i thought no probs it just needs bleeding - now here's the problem, as i was bleeding the system i noticed that the wheel was moving does this meen that the wheel bearings are shot
and number 2 is I eventually got the bike running and when i put my hand on the exhaust downpipes i noticed that only 2 of the pipes are getting hot. Now initially i thought that it was one of the coils but then realised that it couldn't be as it was 2 pipes that were adjacent to each other
Now i have replaced the spark plugs, HT leads, and checked the carbs and dont know what else to do
Please help
cheers
pasty
-
With the front brake, is the caliper set correctly? It is a floating unit that operates from one side with a pivot to apply the second side. Possibly a seized pivot, Do both sides move when you apply the brake?
As for the engine, which two pots are not working? The carbs are fed in pairs via two petrol pipes. Are these flowing fuel to all the carbs?.
A good place to start
-
with the brake only one side moves
with the pots - as im sitting on the bike its the 2 that are on the left
-
With the brake caliper, If you undo the two bolts holding the caliper together and move the parts out of the way then you should be able to move the arm easily with your fingers on it's locating pivot that's still bolted to the fork. If this is not possible you'll have to free this for the brake to work properley.
If it's siezed too close to the wheel it'll have the effect you've felt in that it pushes the piston too far back into the caliper when released so that too much lever stroke is used to move it into a braking position. It'll also bind when running unused probably.
-
a1 advice thank you - it was exactly what you had described
with the other fault it appears that somebody broke into my garage and undid the 2 jubilee clips that hold the carbs to the engine :-[ ;D :-[
-
2 clips?
Weren't the other two fixed at all?
:o
-
Nice one and good you've got sorted.
It's surprising how much effect that brake pivot has if sticking, I think the brake is not bad at all for that era if working correctly.
Also if not binding it makes the throttle work better too!!!!!!!!!!!! Ha Ha.
-
sorry i'm back again with another question, but a simple one hopefully ;D
i'm still trying to sort out the running probs with my carbs and i think it will all be sorted now as ive ordered a new set of carb to head rubbers
but my question today is what does everyone use to hold the rubbers on because i think jubilee clips are too harsh for this job
cheers once again
-
Have a look here http://www.davidsilverspares.co.uk/parts/by-part-number/part_17255300010/. (http://www.davidsilverspares.co.uk/parts/by-part-number/part_17255300010/.)
Cheers
Den
-
You need the proper Honda clips as they are narrower than Jubilee, which is why the Jubilee ones dont work well, problem is the clips ain't cheap and dont even come with the screw which has to be ordered seperately so people think oh it dont matter i'll use cheaper jubilee clips but due to the width they dont tighten properly and distort the rubber
Well there you go, Spitfire got there first and DS includes the screw, but you are still looking at
-
I've got a set that I bought on eBay years ago.
I'll go and see if I can still find them.
Steve
-
thanks again for your help everyone
i'm going to sound tightfisted now and say i'm going to look elsewhere from D/S because my personall opinion is that although he has the stock, i think he is very expensive for what he does
thanks once again
and to finish off here is a piccy of my bike (purists look away now ;D)
(http://i203.photobucket.com/albums/aa240/pastyman_01/chop/th_028.jpg) (http://s203.photobucket.com/albums/aa240/pastyman_01/chop/?action=view¤t=028.jpg)
(http://i203.photobucket.com/albums/aa240/pastyman_01/chop/th_030.jpg) (http://s203.photobucket.com/albums/aa240/pastyman_01/chop/?action=view¤t=030.jpg)
-
ARGGHHHHH
new carb rubbers arrived and duely fitted but i still cant get headers 1 & 2 hot
now so far i have
compression test across all cylinder - all equal
stripped carbs completely and cleaned
used a suck ometer (not sure of real name) it tests the amount of air being sucked into carbs
took plugs out 1&2 are spotless 3&4 sooty
adjusted all valve clearences
what else can i do now please as im starting to pull my hair out
cheers
-
take the plugs out of cylinders 3 and 4 and put a bit of fuel down the plug holes, put the plugs back in and see if she fires on those cylinders when you crank it over..if she does, you still have carb issues....sooty plugs are a sign of over rich mixture---- too little air..
try that and report back....
-
You think DS is expensive? try going to a Honda dealer!!!
Example
Caliper seal from DS
-
It definately sounds like a carb/air filter/exhaust issue, check the carbs again, float height especially, and beware of discounting things because you have checked them already. I can remember timing a 250 AJS once and could not understand why it would not fire, it was set up perfect, I checked it time and time again but found nothing wrong, until I went back to basics and found that I had been timing it backwards !
Check the carbs by the book.
Cheers
Den
-
Are you certain that you have fuel going into carbs 1+2 ? as some of the setups have different fuel supply routes to all four or two and two type pipework going from tank to carbs.
If you definitely have fuel, then try blowing down the overflow tube of carbs 1+2 when it's running as this should force fuel up the main jet and you should get a difference in running on that cylinder.
-
when the engine is running and i put my hand flat against the back end of the carb i can feel suction on my hand, and when i remove my hand it has fuel on it
cheers everyone for help will try all your suggestions before stripping it all down again and start again from the beginning as i think i must be missing something obvious
-
Caliper seal from DS
-
That's 16% KC
Would you say no to a 16% pay rise?
-
Steve, yes I would have to say no, but only out of a sense of social conscience, 16% would be much to greedy a pay rise to ask for what with the recession and everything.... I feel a 2% pay rise to be in line with inflation and no more than nurses get. I am not nearly as sexy as nurses either, I once dressed up in my sister's nurses uniform to prove this point. My sister is not a nurse, she just got the uniform for "marital reasons" and is embarressed to talk about it in public especially when I bring it up in a "harping on, not letting it drop ever" sort of way as she often reminds me.
I totally agree that 76p is important, I once lost 83p at the bus stop whilst fumbling for the change for the bus at the last moment. I had waited for over 18 mins for the bus to come and had all that time to get my money together for the fare, but like a complete wally I left it till the last moment.
The bus driver said in a rather uncaring way " I don't really care about your 83p either get on the bus or look for your change all day, either way I am going"
Needless to say, I had to get on the bus and leave my 83p to its own devices.
However, I just could not sleep that awfull fatefull money losing night, and first thing the next morning , having only the smallest of breakfasts consisting of a solitary halibut, and wearing my old clothes I set off down the road with the intent of finding my 83p.
Little did I realise what a bizzarre set of circumstances was going to be brought down upon me by the cruel hand of fate.
On arriving at the bus stop in our village, I immediately squatted down to look under the bench where my 83p had been known to roll the day before.
I looked and looked, imagine my surprise when I found that somebody or somepersons (probably pensioners) had taken my 83p and swapped it for a scratched CD, a condom and some pizza not even in a bag, and given 4p change.
What sort of "fair trade" is that you may well ask, I certainly did, I felt I had been robbed.
Using my brain, I decided that the pizza was not going to keep very fresh as the sun was getting up, not having any clingfilm, I hit upon the excellent Idea of using the condom as a makeshift baggy, after I folded in the pointy corner of the pizza, it worked very well. I felt sure that a surprise piece of pizza would get me in the misses's good books, after all I had eaten the last halibut, and she had been left with only a chinese takaway for breakfast again. (and a small pie)
Totally deflated at my inability to return home with adequate funds, my attention turned to aquiring the morning paper.
They sell these at the garage, so into the garage I went.
Unfortunately, having not got 83p in my pocket, I found that even with the 4p change that the rogue pensioners had left me plus the 21p I had in a corner of my leather, I could not afford my usual morning paper, and had to settle for a cheaper paper that I was unfamiliar with, it's called the "Daily sport" and might even have motorbike racing in it I thought.
Anyways, one mission accomplished and one failed, all things considered, life might return to normal I thought as I walked home.
I was thinking about shaky burns and if he would have any luck this season, and was miles away.
I just got to the school crossing, and heard a voice shout "oy you"
I didn't think for a moment it was "Oy me", but I looked up to see who the "oy" was for, and it turned out that the "oy you" was being "oyed" by the school crossing policeman, and it was indeed "oyed" at me.
I stopped, and think I may have cursed the 83p again.
Apparently I had ripped a seam in the bum of me jeans whilst scrabbling about under the bench looking for me 83p and now had to talk to the policeman about it.
Which may or may not have gone better had he not wanted to look in my pocketsies.
He took out my tobacco and put it on the wall, that was OK, He took out my lighter and put that on the wall.
Things went wobbly when he found the pizza .
He put that on the wall.
He put the Daily sport on the wall, and at the same time informed me that things were not looking good.
I can honestly say I had not noticed that the CD the pensioners had swapped me (for my 83p) had "dont show Mum" written on it.
He put that in his own plastic bag, then put it on the wall.
"what sort of bare bummed, condomfood, dodgy CD porno paper pervert are you then?" he said.
"It was probably pensioners that did it" I answered. " They swapped me for 83p"
I might have got away with leaving it at that,
except,
He squinted his eyes and looked at me real close and said "ear hang on, haven't I seen you on youtube dressed in a nurses uniform?"
My own sister had taken the 83p to get her own back obviously.
-
Kacey you have a great sense of humour mate and i wish my ideas were as wild as yours as to my post that was just an example i had the numbers for, if you wanted the
-
I know it all adds up bro, I just had to bite on the 67 p bit...
It might get worse... Has anyone asked D.silver how the supplies from Japan are at the moment?
like after the meltdown of the reactors etc.
I reckon the re-manufature of new cars and bikes will come first and "our" spares might be last on the list..
It's possible they could get dearer....?
BryanJ I do need those clips (all 8 ) for my K2 so will take your advice.
-
Steve, yes I would have to say no, but only out of a sense of social conscience, 16% would be much to greedy a pay rise to ask for what with the recession and everything.... I feel a 2% pay rise to be in line with inflation and no more than nurses get. I am not nearly as sexy as nurses either, I once dressed up in my sister's nurses uniform to prove this point. My sister is not a nurse, she just got the uniform for "marital reasons" and is embarressed to talk about it in public especially when I bring it up in a "harping on, not letting it drop ever" sort of way as she often reminds me.
I totally agree that 76p is important, I once lost 83p at the bus stop whilst fumbling for the change for the bus at the last moment. I had waited for over 18 mins for the bus to come and had all that time to get my money together for the fare, but like a complete wally I left it till the last moment.
The bus driver said in a rather uncaring way " I don't really care about your 83p either get on the bus or look for your change all day, either way I am going"
Needless to say, I had to get on the bus and leave my 83p to its own devices.
However, I just could not sleep that awfull fatefull money losing night, and first thing the next morning , having only the smallest of breakfasts consisting of a solitary halibut, and wearing my old clothes I set off down the road with the intent of finding my 83p.
Little did I realise what a bizzarre set of circumstances was going to be brought down upon me by the cruel hand of fate.
On arriving at the bus stop in our village, I immediately squatted down to look under the bench where my 83p had been known to roll the day before.
I looked and looked, imagine my surprise when I found that somebody or somepersons (probably pensioners) had taken my 83p and swapped it for a scratched CD, a condom and some pizza not even in a bag, and given 4p change.
What sort of "fair trade" is that you may well ask, I certainly did, I felt I had been robbed.
Using my brain, I decided that the pizza was not going to keep very fresh as the sun was getting up, not having any clingfilm, I hit upon the excellent Idea of using the condom as a makeshift baggy, after I folded in the pointy corner of the pizza, it worked very well. I felt sure that a surprise piece of pizza would get me in the misses's good books, after all I had eaten the last halibut, and she had been left with only a chinese takaway for breakfast again. (and a small pie)
Totally deflated at my inability to return home with adequate funds, my attention turned to aquiring the morning paper.
They sell these at the garage, so into the garage I went.
Unfortunately, having not got 83p in my pocket, I found that even with the 4p change that the rogue pensioners had left me plus the 21p I had in a corner of my leather, I could not afford my usual morning paper, and had to settle for a cheaper paper that I was unfamiliar with, it's called the "Daily sport" and might even have motorbike racing in it I thought.
Anyways, one mission accomplished and one failed, all things considered, life might return to normal I thought as I walked home.
I was thinking about shaky burns and if he would have any luck this season, and was miles away.
I just got to the school crossing, and heard a voice shout "oy you"
I didn't think for a moment it was "Oy me", but I looked up to see who the "oy" was for, and it turned out that the "oy you" was being "oyed" by the school crossing policeman, and it was indeed "oyed" at me.
I stopped, and think I may have cursed the 83p again.
Apparently I had ripped a seam in the bum of me jeans whilst scrabbling about under the bench looking for me 83p and now had to talk to the policeman about it.
Which may or may not have gone better had he not wanted to look in my pocketsies.
He took out my tobacco and put it on the wall, that was OK, He took out my lighter and put that on the wall.
Things went wobbly when he found the pizza .
He put that on the wall.
He put the Daily sport on the wall, and at the same time informed me that things were not looking good.
I can honestly say I had not noticed that the CD the pensioners had swapped me (for my 83p) had "dont show Mum" written on it.
He put that in his own plastic bag, then put it on the wall.
"what sort of bare bummed, condomfood, dodgy CD porno paper pervert are you then?" he said.
"It was probably pensioners that did it" I answered. " They swapped me for 83p"
I might have got away with leaving it at that,
except,
He squinted his eyes and looked at me real close and said "ear hang on, haven't I seen you on youtube dressed in a nurses uniform?"
My own sister had taken the 83p to get her own back obviously.
and how is this supposed to help with the problem i am having ??? >:( >:( >:(
-
Steve, yes I would have to say no, but only out of a sense of social conscience, 16% would be much to greedy a pay rise to ask for what with the recession and everything.... I feel a 2% pay rise to be in line with inflation and no more than nurses get. I am not nearly as sexy as nurses either, I once dressed up in my sister's nurses uniform to prove this point. My sister is not a nurse, she just got the uniform for "marital reasons" and is embarressed to talk about it in public especially when I bring it up in a "harping on, not letting it drop ever" sort of way as she often reminds me.
I totally agree that 76p is important, I once lost 83p at the bus stop whilst fumbling for the change for the bus at the last moment. I had waited for over 18 mins for the bus to come and had all that time to get my money together for the fare, but like a complete wally I left it till the last moment.
The bus driver said in a rather uncaring way " I don't really care about your 83p either get on the bus or look for your change all day, either way I am going"
Needless to say, I had to get on the bus and leave my 83p to its own devices.
However, I just could not sleep that awfull fatefull money losing night, and first thing the next morning , having only the smallest of breakfasts consisting of a solitary halibut, and wearing my old clothes I set off down the road with the intent of finding my 83p.
Little did I realise what a bizzarre set of circumstances was going to be brought down upon me by the cruel hand of fate.
On arriving at the bus stop in our village, I immediately squatted down to look under the bench where my 83p had been known to roll the day before.
I looked and looked, imagine my surprise when I found that somebody or somepersons (probably pensioners) had taken my 83p and swapped it for a scratched CD, a condom and some pizza not even in a bag, and given 4p change.
What sort of "fair trade" is that you may well ask, I certainly did, I felt I had been robbed.
Using my brain, I decided that the pizza was not going to keep very fresh as the sun was getting up, not having any clingfilm, I hit upon the excellent Idea of using the condom as a makeshift baggy, after I folded in the pointy corner of the pizza, it worked very well. I felt sure that a surprise piece of pizza would get me in the misses's good books, after all I had eaten the last halibut, and she had been left with only a chinese takaway for breakfast again. (and a small pie)
Totally deflated at my inability to return home with adequate funds, my attention turned to aquiring the morning paper.
They sell these at the garage, so into the garage I went.
Unfortunately, having not got 83p in my pocket, I found that even with the 4p change that the rogue pensioners had left me plus the 21p I had in a corner of my leather, I could not afford my usual morning paper, and had to settle for a cheaper paper that I was unfamiliar with, it's called the "Daily sport" and might even have motorbike racing in it I thought.
Anyways, one mission accomplished and one failed, all things considered, life might return to normal I thought as I walked home.
I was thinking about shaky burns and if he would have any luck this season, and was miles away.
I just got to the school crossing, and heard a voice shout "oy you"
I didn't think for a moment it was "Oy me", but I looked up to see who the "oy" was for, and it turned out that the "oy you" was being "oyed" by the school crossing policeman, and it was indeed "oyed" at me.
I stopped, and think I may have cursed the 83p again.
Apparently I had ripped a seam in the bum of me jeans whilst scrabbling about under the bench looking for me 83p and now had to talk to the policeman about it.
Which may or may not have gone better had he not wanted to look in my pocketsies.
He took out my tobacco and put it on the wall, that was OK, He took out my lighter and put that on the wall.
Things went wobbly when he found the pizza .
He put that on the wall.
He put the Daily sport on the wall, and at the same time informed me that things were not looking good.
I can honestly say I had not noticed that the CD the pensioners had swapped me (for my 83p) had "dont show Mum" written on it.
He put that in his own plastic bag, then put it on the wall.
"what sort of bare bummed, condomfood, dodgy CD porno paper pervert are you then?" he said.
"It was probably pensioners that did it" I answered. " They swapped me for 83p"
I might have got away with leaving it at that,
except,
He squinted his eyes and looked at me real close and said "ear hang on, haven't I seen you on youtube dressed in a nurses uniform?"
My own sister had taken the 83p to get her own back obviously.
and how is this supposed to help with the problem i am having ??? >:( >:( >:(
Yeah, he's barking, and obviously has far too much time on his hands! ;D
-
Its meant to take your mind off the problem.
If humour doesn't help sorry.
I thought you could laugh at my misfortune.
Here is some relaxing music from The Enid instead.
The Enid - The Loved Ones (http://www.youtube.com/watch?v=jTDHIou5bpY#)
-
Its meant to take your mind off the problem.
If humour doesn't help sorry.
I thought you could laugh at my misfortune.
Here is some relaxing music from The Enid instead.
The Enid - The Loved Ones (http://www.youtube.com/watch?v=jTDHIou5bpY#)
Eeek! Where's Leonard Cohen when you need him??
-
Are you getting anywhere with it though pastyman?
You sure you're not confusiing this with a stand-up commedians forum Kacey
Something with Halibut always sounds funny though.
.
-
Pastyman, in all seriousness, did you try putting a drop of fuel down the plugholes 3 and 4?
This serves two purposes... it bypasses the carbs, so if it does fire up temporarilly on those cylinders you will know its the carbs.. absolutley no disrespect to you allready cleaning them... You will find many many posts were folks have cleaned their carbs over and over again to find they are still not right.
The second function putting a drop of fuel down does is, sometimes If she fires on those cylinders the extra "oomph" can suck a small block out of carbs... either way its a good diagnostic tool worth a go.
I will not introduce any more halibuts into this post, and apologise for trying to distract you from your bike troubles with halibuts.
I do have a small crayon drawing of a halibut though that my misses did, should you wish to study it ever, I know not just yet, but it's an offer I will keep open.