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Idle flucuation?
Posted: Tue Sep 23, 2008 9:16 pm
by zeke
So I noticed today that may idle speed is set high, near 1400 RPM. I know I need to lower it. What concerns me here is that the idle speed fluctuates while stopped, sometimes dropping as low as 1000 RPM or has high as 1600 RPM. Could a fudged up the valve adjustment last time caused this idle inconsistency?
Suggestions?
Re: Idle flucuation?
Posted: Wed Sep 24, 2008 4:41 am
by boxermania
zeke
valve adjustment will not affect idle quality, at this juncture I would suspect a vacuum leak via a disconnected or cracked hose. Have you checked the rubber hoses that plug to the bottom of the TB's, and the ones to the carbon canister?
Re: Idle flucuation?
Posted: Wed Sep 24, 2008 5:02 am
by gregor
While I was cooking my oil struggling through Sheffield, I noted the idle speed got a bit slower and rougher than usual.
Normally it idles fine at ~1000rpm and went back to that when things got cooler. So maybe temperature related as well?
Re: Idle flucuation?
Posted: Thu Sep 25, 2008 5:18 am
by boxermania
gregor
Yep.....when the oil gets nice and hot, the idle becomes erratic.....it is also a sign to get out of the traffic jam and get some cooling to the engine.
Re: Idle flucuation?
Posted: Thu Sep 25, 2008 6:31 am
by Boxer
Oops! Sorry. I thought you said idle flatulation.
Re: Idle flucuation?
Posted: Thu Sep 25, 2008 9:58 am
by zeke
I checked my tubes at the bottom of the TB, where you plug in the TWINMAX. Everything looked fine, and well connected, no cracking or breakage was apparent. I checked the hose to the charcoal canister as well and that appears fine, but I did not remove the tank.....maybe that will be weekend project. Any other thoughts on potential causes?