making it idle

[ejust]

Hopefully some can or will help me out here... :?

Ive posted this in another thread, but no answers.  My car wont idle right. I cant seem to get it to idle below 1100 rpms. If i turn down the idle  or the residule the cars idle will drop and then fall of and the car will stall. Ive tried turning up residule and down the idle and ive turned down the residule and upped the idle but the same results. Will die if it drops below 1100. When cold i have to keep my foot on throttle for a couple minutes. The cold start works but doesnt help enuf to keep it running.  I did the govenor mod...is it possible i didnt get the idle spring assembly right? Is the lever that the govenor pulls against suppose to rest against the govenor and spring at idle?  Maybe a washer fell down thats needed. I dont know. Ive look for pics to see exactly all the pieces but no one has of the the whole gov. Seen pics of the other half (int and main springs).

Maybe i have to turn up the fueling a bit cause theres not enuf pressure to idle at 900?? or is there a part i didnt hook up right? The car runs fine but just wont idle. Have some smoke at 3/4 and above throttle before turbo and gov kicks in.

hopefully someone can help me in this matter.

[Jeff@TheQuadShop]

I don't have an answer for you but my idle screw is backed all the way out and it still won't idle below 1100 rpm.

[vwmike]

Are you sure that when you put the throttle linkage on you didn't get it off one spline? It sort of sounds like you have it back one spline.

[ejust]

not sure how that would affect much...i got plenty of adjustment on the redidule screw to back it off..if i do that that car will die..so internally the problem is...having to keep pressure on one of the springs on the govenor to keep fuel flowing thru. For some reason im not able to get the throttle/residule setting to rest where the idle doesnt increase (per Bentley) without the car dying.

What the relationship between the idles and residule and how it all works on the govenor (idle spring)?

[Jeff@TheQuadShop]

Are you sure that when you put the throttle linkage on you didn't get it off one spline? It sort of sounds like you have it back one spline.

I've never had mine apart.

[QuickTD]

What the relationship between the idles and residule and how it all works on the govenor (idle spring)?

It sounds to me like the idle governor spring has become disconnected inside the pump. You may need to pull the lid again and have a look.  

The "residual" adjustment sets the initial tension on the main/intermediate governor springs. It should never be set so high that the engine is able to idle at the normal RPM without tension on the idle spring. To properly set the idle and residual you should back both the idle and residual screws out until the engine stalls. While keeping the engine running with the throttle, turn in the idle screw until you reach your desired idle RPM. Now turn in the residual until the idle just starts to increase then turn it out  1/2 to 1 full turn. Make all adjustments with the engine hot. If you find that the idle climbs when the engine is cold you can back out the residual a bit more.

You want the engine to be idling on the idle governor spring. It has the proper rate and tension to adjust for changes in load at low speeds. If you attempt to idle the engine on the intemediate/main springs (residual too high) the engine will either run away or stall, depending on accessory load temperature etc. The main and intemediate springs are far too stiff to properly deal with changes in load at idle speeds.

[ejust]

Thanks for the insight...Im wondering then if maybe the idle spring isnt "stickyout' (not enuf spacers or something) far enuf for that plate to rest against then. Im thinking the plate that the govenor 'pulls" against is going to far back which in return is allowing the car to die if i dont keep the residule setting higher. Just a thought.