SOHC.co.uk Forums > CB350/400
IDLE PROBLEMS CB400/4
Trigger:
A little update on this idle problem.
The 400 is a old engine that burns a little oil and does pump out some vapour from the breather in to the air box. checked everything for any leaks and no leaks found. Set the air screw out at 2 1/2 turns. Changed the plugs from DR8ES-L's to D8EA's and after a 12 mile test run, the idle is sitting OK. Engine temp has dropped but, also the air temp has dropped so, engine running cooler and ticking over fine.
kevski:
Was you running with ngk plug caps as well, because two lots of resistors gives problems, not wanting to teach you how to suck eggs but it's a common mistake and I have made that one myself.
Nurse Julie:
--- Quote from: kevski on June 09, 2017, 08:39:15 AM ---Was you running with ngk plug caps as well, because two lots of resistors gives problems, not wanting to teach you how to suck eggs but it's a common mistake and I have made that one myself.
--- End quote ---
Ermmmm, Yes, that was my doing :-[ :-[ :-[ I serviced the bike last and the time before I think and I had some DR8ES's laying around that I purchased from DS a couple of years ago. Now, my logic tells me that I would have put in the same as I had taken out. Taking in to account the bike has had this problem since I got her, maybe this is why. Strange though as DS still show the DR8's as suitable for the 400/4. I still think the worn engine has something to do with it but will see how she gets on.
paul G:
--- Quote from: Nurse Julie on June 09, 2017, 12:01:21 PM ---
--- Quote from: kevski on June 09, 2017, 08:39:15 AM ---Was you running with ngk plug caps as well, because two lots of resistors gives problems, not wanting to teach you how to suck eggs but it's a common mistake and I have made that one myself.
--- End quote ---
Ermmmm, Yes, that was my doing :-[ :-[ :-[ I serviced the bike last and the time before I think and I had some DR8ES's laying around that I purchased from DS a couple of years ago. Now, my logic tells me that I would have put in the same as I had taken out. Taking in to account the bike has had this problem since I got her, maybe this is why. Strange though as DS still show the DR8's as suitable for the 400/4. I still think the worn engine has something to do with it but will see how she gets on.
--- End quote ---
I still think the worn engine has something to do with it
Get him indoors to sort it while he is doing mine ;) ;)
Nurse Julie:
--- Quote from: paul gledhill on June 09, 2017, 12:11:27 PM ---
--- Quote from: Nurse Julie on June 09, 2017, 12:01:21 PM ---
--- Quote from: kevski on June 09, 2017, 08:39:15 AM ---Was you running with ngk plug caps as well, because two lots of resistors gives problems, not wanting to teach you how to suck eggs but it's a common mistake and I have made that one myself.
--- End quote ---
Ermmmm, Yes, that was my doing :-[ :-[ :-[ I serviced the bike last and the time before I think and I had some DR8ES's laying around that I purchased from DS a couple of years ago. Now, my logic tells me that I would have put in the same as I had taken out. Taking in to account the bike has had this problem since I got her, maybe this is why. Strange though as DS still show the DR8's as suitable for the 400/4. I still think the worn engine has something to do with it but will see how she gets on.
--- End quote ---
I still think the worn engine has something to do with it
Get him indoors to sort it while he is doing mine ;) ;)
--- End quote ---
Ha, I am at the end of a very long queue Paul, I keep getting knocked back by customers joining the list.....not pointing fingers obviously 😊😊😊
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