Naughty Car

[Whyte146]

Hi there, doing my head in:

Symptoms are as follows,

Cutting out,
Idling at 500rpm,
15 on afr at idle,
When it goes, off throttle the afr leans off to 20!
Lumpy.

Basically being very very naughty, any suggestions?

I would really appreciate your input - before I spaff money on a new carb from GT spares.

Oh, turbo is a GT28, ktec tubular manifold which cracked and was repaired, big jim down pipe and AFR gauge which has been calibrated properly.

Thanks.

[robw]

Have you adjusted the idle screw and mixture screw?

[Adey aka Ewok]

Is the idle/mixture screw even there?

[Whyte146]

Not touched, not even sure I have one? Before the crack in the manifold it ran like a dream! I obviously took carb off to do work on manifold.

[SCHWARTZ]

Cleaned out the idle jet?

[michael tierney]

restrictor on breather pipe....replaced?

[Whyte146]

Which breather pipe?
I've not done anything with the jets, I was planning on getting car set up by Bogg brothers, east Lutton. But they are not interested anymore!

I'm wondering if the carb is buggered. It's so annoying, it needs constant attention. Worse than the wife!

[robw]

They're annoying! Have you cleaned it out?

[michael tierney]

have a good read.... http://www.rtoc.org/boards/showthread.php?t=27381 somewhere in there u can see the idle jet.....easy to clean

[w35ty]

Idle jet blocked? Take it out give it a good clean.. Had similar problems before with mine

[gtmatt]

Idle jet blocked? Take it out give it a good clean.. Had similar problems before with mine

Me to bought a new one in the end that did the trick

[Whyte146]

Thanks guys, I have not touched the carb. Perhaps my next job....

[Brigsy]

Did you replace carb base gaskets and inlet/exhaust manifold gasket? Possibly an air leak.

[Whyte146]

Carb base gasket no, but yes to inlet/outlet gasket.

It's a very naughty car.

Grrrrr

[Brigsy]

Change the carb base gasket if you have took the carb off..also check one way valves and pipes on inlet