More Engine issues...

1308 Views 4 Replies 5 Participants Last post by Hotrod, Apr 24, 2013

jfenim

Discussion Starter · Apr 5, 2013

Ok last year I drove my 80 Vette about one day, actually was my wedding day. Alot of issues came up, thankfully it got me where I had to go, that I didn't have time for so I haven't fixed it yet. The rear wheel bearing on the driver's side is no good seing as about 4 people told me the wheel was wobbling horribly. My other main issue is I can't seem to adjust the engine at all on this car. It does not run consistently at all when Idling, the RPMs go all over the place. I'll adjust it, then a few minutes later it'll be running poorly. It even completely stalled out on me as I was putting it in storage. I have no idea what's going on with it, but I did notice the Vacuum Line going to the Brake Booster completely crushed. Also, I removed the whole AIR system and am pretty sure I routed the vacuum lines properly but I could be wrong... Thanks for any suggestions

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toobroketoretire

· #2 · Apr 5, 2013

jfenim said:
Ok last year I drove my 80 Vette about one day, actually was my wedding day. Alot of issues came up, thankfully it got me where I had to go, that I didn't have time for so I haven't fixed it yet. The rear wheel bearing on the driver's side is no good seing as about 4 people told me the wheel was wobbling horribly. My other main issue is I can't seem to adjust the engine at all on this car. It does not run consistently at all when Idling, the RPMs go all over the place. I'll adjust it, then a few minutes later it'll be running poorly. It even completely stalled out on me as I was putting it in storage. I have no idea what's going on with it, but I did notice the Vacuum Line going to the Brake Booster completely crushed. Also, I removed the whole AIR system and am pretty sure I routed the vacuum lines properly but I could be wrong... Thanks for any suggestions

When you say "I adjusted it" what exactly are you doing to "adjust it"? It takes a lot more than simply turning a screw to tune an engine and I have a feeling that's all you're doing.

First of all how many miles are on your engine and what kind of pressures are you seeing when you do a compression test? About 150 psi or more? And what is your initial timing set at? Give us more information and we'll see what we can do to help you.

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Slicktop

· #3 · Apr 8, 2013

Fix the wheel bearing problem first, the car is not safe to drive that way. Then replace the vac line to the brake booster and make sure there are no vacuum leaks. Put a vacuum gauge on the intake system and check the vacuum. You can go on line to find a chart to read the vacuum gauge. After you have done these things it will be time to try and tune the engine. You have to have correct vacuum before you begin.

http://www.classictruckshop.com/clubs/earlyburbs/projects/vac/uum.htm

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Lethal Tendencies

· #4 · Apr 9, 2013

Also get with someone who is good with a timing light.

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Hotrod

· #5 · Apr 24, 2013

I'm pretty certain that the crushed vacuum line to your brake booster is causing a rough idle.:eek2:

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