Why are chevy's so freakin hard to work on??? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 12-17-2002, 06:58 PM
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Angry Why are chevy's so freakin hard to work on???

OK, I have a problem with Chevys, that's obvious. But my Chevy problems are getting worse because it's my wife's rod. I've done everything I know to do to the damn thing and it is STILL misfiring!! I changed the cap, rotor, plug wires, and plugs. What the hell else is there that could cause it to misfire? I just put an Isky cam in and a Pete Jackson gear drive, and after that the damn thing won't run right! It only misfires when it's loaded and driving at a steady pace. 40mph is a jerky ride. The damn thing won't level out! What else can I do to this stupid car to make it run right???

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Old 12-17-2002, 07:20 PM
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Double check the firing order of your plug wires. this is an easy mistake when installing new wires to get two wires switched, say #7 and #8. Engine will run well enough till loaded, then misfire is noticable. I presume the new cam is timed properly with the crank. improper cam installation can cause the same result.
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Old 12-17-2002, 07:33 PM
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check your timeing.Thats what was wrong with my camaro.
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Old 12-17-2002, 07:35 PM
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Chevy's not responsible for an engine you built. Sounds like a cam or timing problem. Could also be a vacuum leak, mixed up plug wires, dirty carb, misadjusted valve. Weak valve spring. etc,etc,etc.
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Old 12-17-2002, 08:05 PM
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Also check plug wires 7 and 5, they fire right behind the other, and there right beside each other on the block, easy to have them wrong. if they are it`ll still run, but it`ll run like crap, 1 8 4 3 6 5 7 2 is the firing order, check the wire from the cap to the plug to make sure it`s going to the correct one.
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Old 12-17-2002, 09:55 PM
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Double check the cam if you are using the used lifters or the wrong kind for the cam it could take the peak right off the cam lobe also check your valve spring tension and your rocker arm adjustments good luck hope this helps <img src="graemlins/crash.gif" border="0" alt="[crash]" />
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Old 12-17-2002, 11:50 PM
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Check timing if its advaced too much it'll pull stunts like this.
Is it burning right???When mine's too lean it pulls a hurky jerky.
Check the wires to the module under the cap.I think it was pontiac or olds that had problem with wires breaking there.
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Old 12-18-2002, 05:31 AM
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Sometimes, if you put oversized plug wires on(if this is an HEI distributor, that is) and you take the plug wires off the plug while it's still running, you can burn up part of your module. I don't know why this happens, but i put 8.8mm wires on mine, and I took off the wire to check something, and it ended up ruining the module, causing a misfire especially noticeable when the engine is loaded. I think your local parts store (NAPA, O'Reilly's) can check it for you.

[ December 18, 2002: Message edited by: adryan16 ]</p>
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Old 12-18-2002, 04:08 PM
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ok did you know that a chevy will run 1 tooth off on the cam gear advaned and retarded . you can have the wiring right but one tooth off in either way and it will give you a miss. line everything back up tdc on number1 rotor should be lined up on or near the drivers side rear carb bolt on the back of the carb
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Old 12-18-2002, 04:18 PM
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DAMN!!!
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