Coughing Hearse

[Blt2Lst]

Did you correct the trouble codes yet?

[Filmfest Guy]

Yup, trouble codes clear, no new ones and problem still exists.

The absolute last thing I want to do is start messing with the carb, but there really isn't anything else to check, replace, clean or repair.....

[Blt2Lst]

Originally Posted by Filmfest Guy

The absolute last thing I want to do is start messing with the carb, but there really isn't anything else to check, replace, clean or repair.....

If you don't know when the last time the carb was rebuilt, it is probably time..

It made a world of difference when I had mine done.




.

[j cAT]

Originally Posted by Filmfest Guy

Yup, trouble codes clear, no new ones and problem still exists.

The absolute last thing I want to do is start messing with the carb, but there really isn't anything else to check, replace, clean or repair.....

what about the EGR replacement ?

[Filmfest Guy]

Originally Posted by Blt2Lst

If you don't know when the last time the carb was rebuilt, it is probably time..

It made a world of difference when I had mine done.




.

What doesn't make sense is that there would be a carb problem after the car overheated.

And the carb has never been done. When you rebuilt yours, did you buy a re-manufactured carb, or use a carb kit in the original?

[Filmfest Guy]

Originally Posted by j cAT

what about the EGR replacement ?

The EGR has been replaced, and there was no difference in the "chuggle" problem.

I cannot express how frustrating this is now!

[Blt2Lst]

Just a thought, have you checked the vacuum operated exhaust valve on the left side downstream from the exhaust manifold?
If it frozen in the wrong position, that may cause some sort of exhaust restriction and maybe some driveability problems. Not sure what happens when these fail, just my theory. To check, apply vacuum and observe valve, plunger should move freely and it should hold vacuum also,

[Blt2Lst]

Originally Posted by Filmfest Guy

What doesn't make sense is that there would be a carb problem after the car overheated.

Stranger things have happened..

[Blt2Lst]

Originally Posted by Filmfest Guy

And the carb has never been done. When you rebuilt yours, did you buy a re-manufactured carb, or use a carb kit in the original?

I had these guys rebuild mine.. Worth the money IMO.

http://smicarburetor.com/products/sf.../productID/432

[j cAT]

Originally Posted by Filmfest Guy

The EGR has been replaced, and there was no difference in the "chuggle" problem.

I cannot express how frustrating this is now!

remove the new EGR valve plug the exhaust port that is now in view. check to see that the port going to the intake manifold has vacuum.

[Filmfest Guy]

Originally Posted by Blt2Lst

Just a thought, have you checked the vacuum operated exhaust valve on the left side downstream from the exhaust manifold?
If it frozen in the wrong position, that may cause some sort of exhaust restriction and maybe some driveability problems. Not sure what happens when these fail, just my theory. To check, apply vacuum and observe valve, plunger should move freely and it should hold vacuum also,

the valve is working, albeit slowly. It does open fully, and hold vacuum.

(I had high hopes for this one!)

[Filmfest Guy]

Took the car through its annual mandatory emissions test today, and passed with flying colours. Although HC has increased marginally from .61ppm to .74ppm, NOX and CO both dropped.

Does this give anyone any more ideas?

[Filmfest Guy]

Originally Posted by Blt2Lst

I had these guys rebuild mine.. Worth the money IMO.

http://smicarburetor.com/products/sf.../productID/432

Checked the site, unable to find an application to match my carb.

This would be one of the last options, simply due to the cost....

[Blt2Lst]

Originally Posted by Filmfest Guy

Checked the site, unable to find an application to match my carb.

This would be one of the last options, simply due to the cost....

You should have the electronic q-jet carb, they do have them or they can rebuild yours.
Rebuilding yours is the least expensive way to go.