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-   -   idle's fluctuating? (http://www.toyota-supra.info/forums/mkiii-supra/16586-idles-fluctuating.html)

jason7504 04-10-2010 01:12 AM

idle's fluctuating?
 
hi guys,

I just got a 87 NA supra and it runs pretty good but i noticed at idle it kind of fluctuates, what do you think is causing this? how should i diagnose this?

cre 04-10-2010 01:32 AM

Start with what's suggested here: http://www.toyota-supra.info/forums/...le-issues.html

Possibilities include: TPS, AFM, Vacuum Leak, Intake Leak, misfiring, improper ignition timing

jason7504 04-10-2010 01:52 AM

here's a video
http://i28.photobucket.com/albums/c2...h_MOV02944.jpg

jason7504 04-10-2010 04:18 PM

does that video point to anything specific?

jason7504 04-16-2010 12:15 AM

would low oil pressure from some leaks cause the idle to fluctuate?

cre 04-16-2010 04:50 AM

What have you actually checked?

jason7504 04-16-2010 06:47 AM

Quote:

Originally Posted by cre (Post 81543)
What have you actually checked?

well i know there's a few places that leak oil such as the valve cover gasket but not sure how to check to see where the vaccum leaks might be, heard something about using brake fluid or something but not sure what the best way to do it is

jason7504 04-28-2010 10:55 PM

i think the spark plugs are misfiring because oil is leaking from the valve cover into the spark plug tubes


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