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Author Topic:   Need help ASAP
posted February 15, 2003 12:51 AM
I just put a 350 in my truck and tried to start it,it cranks a couple times and then blows pressure out the carb.I am not sure the carb is good,but almost positive the motor is.Where should I start?I don't want to buy a carb if I don't need to.The valves should already be adjusted and I know I put the cam and chain on right.Any suggestions would be greatly appreciated.Thanks.

posted February 15, 2003 02:27 AM
check and make sure your timing is not of 180 deg,sounds like it to me

posted February 15, 2003 07:49 AM
What andykmod said.......

posted February 15, 2003 11:37 AM
another thing you might want to look at is make sure your balancer hasn't slipped had that happen before .

posted February 15, 2003 12:18 PM
Yep,sounds like you distributor is installed incorectly. 1)Remove Distributor cap.
2)Mark distributor where #1 on the cap is located.
3)remove #1 spark plug and have someone crank engine while you hold a finger over spark plug hole. When you come upon the compression stroke, it will blow you finger out of the plug hole. NOTE, it will blow you finger out of hole on compression stroke also,but if you crank engine around a couple of times, you will tell the dirrerence. Once you have found the compresion stroke on #1 cylinder, turn Harmonic balancer forward or back slightly until timing mark on harmonic balancer is lined up correctly.
4) re-install sparkplug and wire.
5) install distributor so that rotor points to the #1 sparkplug terminal on distributor cap. Install cap and check that your plug wires are installed in correct order on cap. Clockwise 1-8-4-3-6-5-7-2 Odd # cylinders are on drivers side and even on passenger side of engine. This should have you close in the ballpark to where it will start or the distributor will only need turned very little. On common mistake is that some people beleive when you align the marks on the timing chain and gears this is TDC Compression stroke,but is infact TDC of the exaust stroke causing them to install the distributor 180% out.

posted February 15, 2003 12:40 PM
I cahnged the distributor 180 degrees and it doesn't blow anymore.It kinda wants to start with different carb,but I am thinking I need to reset my valves since I was 180 out.Correct?I think I adjusted them 180 out so they would all be wrong.You guys are awesome.Thanks for all the help.I was about to give up,but with your help I think I got it licked.Thanks again.

posted February 15, 2003 04:03 PM
I give up,I can;t get it to start at all.I reset the valves(the way it says on this site) and still nothing.I am lost now.

posted February 15, 2003 04:20 PM
If you tried everytihing and still doesn't start check the plugs. I had an engine I checked and recheck just wouldn't start. All I had were some old plugs, so I removed 4 from one side and replaced them with some more old plugs and the engine fired, ran real rough. Removed/replaced the other 4 and she fired right up and ran real good. The old plugs looked ok, but were fouling out. Don't give up sometimes it something real simple we over look. Good Luck

jhon hollomon
posted February 15, 2003 05:01 PM
Are you sure you did'nt mess with your carb settings when you wre 180 out? Try small turns with your distributor each way till it acts like it wants to start better. You may still be a tooth or three off on the distributer.

posted February 15, 2003 07:32 PM
It's a 77 350 in a 81 with an Edelbrock 1406 and a high output distributor from Jegs.I think I may have the valves to tight according to a site I found.Thanks

rico 08
posted February 16, 2003 08:50 AM
try .026-.028 or a little more(that's intake exhaust)that's loode enuf to try it.

posted February 17, 2003 09:57 AM
If you were backfiring out of your carb when it was 180 out you might check the carb now.

posted February 17, 2003 12:55 PM
sounds like a ignition timing problem put on no 1 tdc and see where your rotor is compared to no1 plug wire.

[This message has been edited by dirtracer7 (edited February 17, 2003).]

posted February 17, 2003 06:01 PM
Thanks for all the help.It is running good.I had the valves to tight.O well live and learn.Thanks again.

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