Help - Djet running way too rich Options

[Halfnelson]

Help - my new to me 1973 1.7 Djet came running really sweet, but almost immediately developed the 'hunting tick-over' of lean running / air leak. We replaced all the vacuum pipes, found one of the inlet gaskets had a very slight leak. Seems somewhere along the line things have been tweaked to compensate for the leaks so that now they're cured, the car is running super rich. Having had a L-jet for years the Djet is new to me so any advice on where to start first would be much appreciated. Thanks Chris

[jrmdir]

Thanks for the feedback. Just to be clear, I'm in no way advocating permanently removing components. This car is still in the ER as far as drivability so I wanted to rule out things before buying parts. My decel valve is toast - stuck shut - so "bypassing" it was more because I took it off to get to the MPS and didn't feel the need to bolt it back on just for appearances. Easier to plug the line. I will spring for a new one once I can get this car on the road long enough to actually have a deceleration event (IMG:style_emoticons/default/smile.gif)

I removed the AAR to test it and found that the unobtainable (AFAIK) rubber "Y" pipe between the manifold and AAR was also toast. Again, easier to cap the manifold nipple until I can find a way to re-plumb. Probably run a straight hose from manifold to AAR and find another vacuum source for the small hose that is supposed to operate the devel valve.

Finally, chasing a rich mixture it's advised to make sure the cold start valve isn't leaking or being opened when not needed. I.E. colder than 40 degrees while starting. So, to me, bypassing in this case was a no brainer. Since there has been no improvement I'll reconnect it at some point.

Thanks once more for the great knowledge base that makes up this forum. Without support like this I'd probably have already given up.

Ron