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car stalls once its warmed up!!!
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chevyguy78
User
Feb 12, 2008, 8:26 AM
Post #1 of 5
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car stalls once its warmed up!!!
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Ok heres the deal, i swapped the engine out of my camaro, and put a 400 small block in it,after i put it in, i started it, timed it it was running good, went to shut it off, my temp gauge was on(light,bright red), so i replaced the water pump with the one off my 305, and put a brand new thermostat (190 degree). now the car seems to run great until its warmed up, the temp light comes on, just a faint glow. and when i slow down to stop the engine gets really shaky and most times dies! It always starts up though. It does have a holley 600cfm carb, i have all my vaccum lines hooked up or plugged. I can't figure out why it dies??? the guy i bought the engine from said they rebuilt it, but put a used cam in it, and that the valves might need adjusted, could this cause this problem?? how do I adjust the valves? chilton has a page on it in their chevy manual in the front, but i don't have one. can someone please help me!!!!
chevyguy78
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Double J
Veteran
/ Moderator
Feb 12, 2008, 1:03 PM
Post #2 of 5
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Re: car stalls once its warmed up!!!
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try this...see if it helps....click here
This if for hydraulic lifters... if you have solid lifters...refer to that section ,you'll see where to click to ...
This next procedure is done when engine is running..... again for hydraulic lifters.....
NOTE: oil will spray up thru the push rod/rocker ...will be messy....unless you can get ahold of some rocker stoppers...things that clip on the rocker to stop the splash of oil....protect oil from getting on the manifolds/exhaust...
Readjustment
The following procedure, performed with the engine running, should be done only in case readjustment is required.
- After engine has been warmed up to operating temperature, remove rocker cover.
- With engine running at idle speed, back off valve rocker arm nut until rocker arm starts to clatter.
- Turn rocker arm nut down slowly until the clatter just stops. This is the zero lash position.
- Turn nut down 1/4 additional turn and pause 10 seconds until engine runs smoothly. Repeat additional 1/4 turns, pausing 10 seconds each time, until nut has been turned down one turn.
let me know it if helped ya
JIm
(This post was edited by JIM N on Feb 12, 2008, 1:08 PM)
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Lando10101
User
Feb 12, 2008, 1:19 PM
Post #3 of 5
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Re: car stalls once its warmed up!!!
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It is a 1978 ? I have never seen one of them without remote / aftermarket oil - coolant - batt temp gauges 
I always wanted to try taking an old set of "tall" rocker arm covers and cutting the top off to adjust the rockers with no spillage . never did get around to it been so long now but I do wonder if it would be enough to contain the spillage even without the clips. Back to subject *Yes misadjusted valves can cause heating just like a worn timing belt or misaligned timing belt can . Good luck I used to love my z28 those were the days .
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chevyguy78
User
Feb 13, 2008, 5:18 PM
Post #4 of 5
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Re: car stalls once its warmed up!!!
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the valve adjustment worked, thanks alot. car runs alot better.
chevyguy78
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Feb 14, 2008, 3:57 AM
Post #5 of 5
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Re: car stalls once its warmed up!!!
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Thanks for the followup Chevyguy, and great work JIM for finding that stuff!
T
(This post was edited by Tom Greenleaf on Feb 14, 2008, 4:01 AM)
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