SOHC.co.uk Forums > CB750
I fear the worst
csd4t:
No I don't have a tester but a finger test!!! seems to be ok. The bike starts well (without choke) and runs well enough. If it is low compression then it can wait till winter before the engine comes out.
Saisei:
You don't need a really expensive tester if all you are looking for is a drop in compression on one pot. Personally, given the symptoms, i would eliminate this before delving elsewhere.
http://www.ebay.co.uk/sch/i.html?_nkw=Compression%20tester&ssPageName=GSTL
csd4t:
Got me a tester and it seems I'm very low on all 4 cylinders (between 70-90 psi) with oil it goes up around 30psi. Does this mean rings? Oddly enough No4 cylinder, the one that is smoking had the higher reading???
Anyway It'll have to wait until winter for a rebuild unless something serious happens.
Trigger:
--- Quote from: csd4t on July 11, 2015, 04:04:10 PM ---Got me a tester and it seems I'm very low on all 4 cylinders (between 70-90 psi) with oil it goes up around 30psi. Does this mean rings? Oddly enough No4 cylinder, the one that is smoking had the higher reading???
Anyway It'll have to wait until winter for a rebuild unless something serious happens.
--- End quote ---
Could be ring's, bores or valves
sprinta:
--- Quote from: csd4t on July 11, 2015, 04:04:10 PM ---Got me a tester and it seems I'm very low on all 4 cylinders (between 70-90 psi) with oil it goes up around 30psi. Does this mean rings? Oddly enough No4 cylinder, the one that is smoking had the higher reading???
Anyway It'll have to wait until winter for a rebuild unless something serious happens.
--- End quote ---
Did you do the test with the throttle fully open?
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