Welcome to Ultimate Subaru Message Board, my lurker friend!
|Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.
We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!
Serving the Subaru Community since May 18th, 1998!
Idle low and back fire
Posted 22 November 2006 - 12:16 AM
When started, idles fine, no backfire, drive it, turn it off, do what ever, restart it, the idles REALLY low somtimes it nearly dies, and when u rev it its slow and when u hit prolly 900 it backfires through the intake and the turbo light flashes. You drive down the road abit and the problem disapears and only comes back when u turn in off and restart it. Whats up??
Posted 22 November 2006 - 08:24 AM
it may be ignition or timing related.
Posted 22 November 2006 - 01:03 PM
Posted 23 November 2006 - 03:33 AM
Posted 23 November 2006 - 03:47 AM
Posted 23 November 2006 - 01:45 PM
Posted 23 November 2006 - 04:49 PM
I would agree with this being ignition related. If it were happening all of the time I would seriously suspect valve problems: Either a burnt valve or one that was sticking in the guide and not seating properly.
Is the ignition timing adjusted properly? If so, to what value? Is this on your 86 EA82T? Flapper-style MAF and vaccum advance (and retard??) on the distributor? The advance mechanisms might be sticking/failed. The vac advance may be moderated by a thermo-vacuum valve which may have issues.
Also, don't overlook sparkplug and wires. Wires can fail or become marginal after very short distance/time. The IAC might be another culprit, at least as far as low idle speed. (And I assume that you know the turbo light is just from the backfire overpressure.)
Posted 23 November 2006 - 07:22 PM
Yes this is my 86 EA82 w/ Flapper style MAF and vacuum advance. Plugs are brand new NGK's i put in, the wires...i dunno.
Posted 23 November 2006 - 09:01 PM
Sounds like where to concentrate your attention. I took the advice of grossgary and soldered wires at the CTS, leading back to a more accessible and serviceable connector.
hmm the idle picks up if i push REALLY hard on the plug of the CTS, i cant seem to get the plug on there well enough...
Posted 24 November 2006 - 02:30 AM
Posted 24 November 2006 - 12:25 PM
Posted 24 November 2006 - 12:56 PM
Posted 24 November 2006 - 11:05 PM
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users