Bad idle SOLVED

[Artfrombama]

Simple fix but gives me a little confidence in making this car a dependable driver.

[pmax]

Yes, the leaking toilet seat "pop off valve"
To Pop Off or not to Pop Off?

Congrats !

[adias]

Sorry... what are we looking at above and which engine (SC/3.2)?

[Artfrombama]

Originally Posted by pmax

Yes, the leaking toilet seat "pop off valve"
To Pop Off or not to Pop Off?

Congrats !

Very informative thread, Thank You. Now I know the POV
was installed backward, the reason that the underside of the air filter element is beat to crap.
And looks like I have a split airbox too, but the engine runs nicely.

[Artfrombama]

Originally Posted by adias

Sorry... what are we looking at above and which engine (SC/3.2)?

2.4
73.5 T
No clue why the photos are turned 90*

[Reiver]

If the underside of your air filter is 'beat to crap' then you have been backfiring.....did the pop off leak prior to the backfires or did they mess your box up.
Hate them or love them....mine, properly installed...has saved my box on two occasions in 3 years now....idles fine, runs great even after those two backfires.

[Artfrombama]

Originally Posted by Reiver

If the underside of your air filter is 'beat to crap' then you have been backfiring.....did the pop off leak prior to the backfires or did they mess your box up.
Hate them or love them....mine, properly installed...has saved my box on two occasions in 3 years now....idles fine, runs great even after those two backfires.

I bought this car as a disassembled project, the injection had been disassembled by a previous owner (R.I.P) that attempted to repair the CIS, never got it running. I bought the car and had the CIS rebuilt (Thanks Brian).
The engine has ran perfectly, no backfires until recently when the fuel pump started to intermittently stop working, then I experienced a couple of backfires and rough running.
The car came with a damaged K&N air filter that I plan to change.
The P.O. didn't throw away the original fuel pump, I tested it on the car and works fine except a fuel leak around the electrical terminals. I've sent it off to the rebuilder in CA. that was recommended on this forum.
I'm sure my airbox is broken, most of the screws are stripped but the engine seems to not mind. Clutch change in the future that I plan to do the airbox and address a few oil leaks.

[djpateman]

Originally Posted by Artfrombama

No clue why the photos are turned 90*

The forum software automatically aligns the photos in landscape mode so that the long edge is always horizontal; obviously not an easy thing to change.

[manbridge 74]

Choosing the “square” option before taking a picture solves it.

[Bob Kontak]

Originally Posted by Artfrombama

I'm sure my airbox is broken, most of the screws are stripped but the engine seems to not mind. Clutch change in the future that I plan to do the airbox and address a few oil leaks.

I did read in a separate post recently that the early CIS cars cannot be fitted with the newer SC airboxes that have the cold start injector runners.

I don't know anything more about this. Just a heads up.