Question about 1990 Chevrolet K1500

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New 350 in the truck along with a new timing chain...trucks sometimes starts but does not like to run almost always stalls out...pretty much 100% that the timing chain is correctly installed...would a clogged egr be my problem?

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  • chad_got_r_d Feb 05, 2010

    sorry forsot to mention that ive been trying to time it....when i get it right and plud the bypass back in it quickly stalls out again...anyone have a vacuum hose diagram? i think the vacuum lines are going to the wrong places....motor ran and idled ok when first put in truck then before i could get the hood on it started into the really rough idle and doesnt seem to want to run no matter what rpm

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Well you may want to check the timming first,I can only guess that you had to swap over parts and may have dist. of a hair.You can always pull the egr off and see if it is stuck or if it will move.

Posted on Feb 05, 2010

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Chain may be installed right but is it in time? egr is a possibility,but i would reassure yourself that the engine is in time.take a vid of it,post it

Posted on Feb 05, 2010

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1991 Buick Ragal Custom 3.1 starts, then stalls immediately.


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I have a1989chevroletpick up 350 engine when its in idle itruns but i put it in gear it stalls i spray starting fluid in the carb it will start back up put it in gear it stalls


There are a few things that can do that. I'd check the timing (that engine likes about 8 degrees advance) Check the timing chain as well: Remove the distributor cap and turn the engine by hand. Start at 0 degrees on the timing tab. Turn in the normal rotation direction 'till the rotor starts to move, then turn backwards and measure the amount of travel before the rotor starts to move again. Anything more than 4 to 6 degrees of slack is too much.(less is better) If the chain stretched, it will throw off the cam phasing giving the carburetor a low vacuum signal and causing stalling when even slightly loaded. If bad, change the top gear (use a steel replacement) and chain. Lower gear is usually good.
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If you have codes we can go from there.
You should pull your valve cover and check you timing chain tension, it should be very tight and not loose. if it is loose it is most likely time for a new chain and/ or tension and guides. I always replace them as a kit. Keep in mind that if the chain is worn it will get progressively worse until the engine will not run or the chain will wear in to the water galleys behind the water pump on the timing chain cover. sorry man.



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