90 Z Running Bad

[mchall629]

Has anyone experienced any issues with vapor locking?

I think in the next week or two I am going to order injectors. We have had the car since 94 and to my knowledge have never been replaced. When we replaced the plugs a few weeks ago there were two... and I don't recall off the top of my head which cylinders it was, that were running pretty hot.

While I am at it, will change the filters as well.

A few years ago I replaced the vacuum pump. Can someone give me an idea of when this thing should come on? I am wondering if this thing has gone bad again also?

Can someone shoot me a link to Kurt or Jerry for the gaskets.

Finally, do you know of anyone that sells a total package for injectors, coil packs, gaskets, vacuum hoses etc.?

I would love to do all this myself, I just don't know if time will permit. If anyone has suggestions for someone in TN that works on these cars I wold appreciate it.

Thanks.

[Kevin]

Originally Posted by bldavis11

my bet is on the fuel pump(s) or fuel filter. Sounds like a fuel flow problem. Would a failing injector REALLY cause the bucking? Seems that's more like all eight "failing" at once (e.g. problem delivering fuel to the injectors, not through the injectors).

Well that's my .02.
-Doc

I had 2 bad injectors and the bucking got worse and worse as the car heated up. it was like driving a washing machine

[ScottZ95ZR1]

Originally Posted by mchall629

I would love to do all this myself, I just don't know if time will permit. If anyone has suggestions for someone in TN that works on these cars I wold appreciate it.

Thanks.

I'd suggest you take your car to Jim Van Dorn's shop (AutoMasters) in Bowling Green, KY. http://www.automastersofbg.com/

He's just an hour trailer ride north of Nashville.

[VetteMed]

Originally Posted by mchall629

A few years ago I replaced the vacuum pump. Can someone give me an idea of when this thing should come on? I am wondering if this thing has gone bad again also?

The vacuum pump should turn on with the key turned to ON, and run for about 5 seconds, at which point it should turn off. If it doesn't run at all, there's a problem with the wiring or the pump. If it runs continuously, then there's a vacuum leak somewhere under the plenum, most likely.

[vandornjim]

Originally Posted by mchall629

Good afternoon folks,
Any suggestions for a good Z mechanic between Nashville TN and Bristol TN?

Hey Guy. DO yourself a favor. Take the car to a real mechanic and don't start replacing parts. YOu'll save a ton in the long run. I've seen it over and over.
We are 60 miles north of Nashville off I-65, next to the Corvette Plant.

[bldavis11]

Jim,
What's the best avenue of approach from a diagnostic stand point? Would you test fuel pressure first? Check resistance on the injectors first? Could be the plugs I suppose...
Doc

[A26B]

Originally Posted by mchall629

Can someone shoot me a link to Kurt or Jerry for the gaskets.

I would be pleased to offer any gaskets or seals you may need. Contact me if you need any assistance.

Please click the link below in my signature, to access the website.

Thanks,
Jerry

[vandornjim]

Originally Posted by bldavis11

Jim,
What's the best avenue of approach from a diagnostic stand point? Would you test fuel pressure first? Check resistance on the injectors first? Could be the plugs I suppose...
Doc

Well, first thing I do is drive it. My butt tells me where to look. Misfire, etc. V isual on plugs and wires, if/when plenum comes off, nice thorough inspection and testing procedures.

No guesses, no installing wasted parts.