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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: shootinmanbwh on September 16, 2007, 10:30:36 PM

Title: HELP: truck is very hard starting
Post by: shootinmanbwh on September 16, 2007, 10:30:36 PM

I have a 73 c10 with a 454 and a th400 auto.  I put a brand new holly 4bbl on it, a brand new battery and cables, new cap, rotor, plugs and wires.  The truck will turn over very slowly at first until it drains the battery.  If I jump it, it will turn over fast enough to start otherwise, the battery just gets killed.  The alt is working.  Could this be a timing problem???

Title: Re: HELP: truck is very hard starting
Post by: zieg85 on September 17, 2007, 04:22:36 AM

Sounds like a bad new battery to me.

Title: Re: HELP: truck is very hard starting
Post by: okuma on September 17, 2007, 10:28:50 AM

sounds like a bad battery to me too. ;)

Title: Re: HELP: truck is very hard starting
Post by: 1973c20 on September 17, 2007, 11:24:02 AM

I agree with battery, because the battery is what powers the starter and if it is how you described, then it seems the most logical part that is to blame.

Title: Re: HELP: truck is very hard starting
Post by: 81Cheyenne on September 17, 2007, 12:11:15 PM

How does it run once it is started?  In addition to the battery, you might want to check the soundness of your cable connections and also that you got the plug wires in the right order.

Title: Re: HELP: truck is very hard starting
Post by: Bitzer! on September 17, 2007, 12:49:17 PM

sounds to me like an earth (ground?) problem. If it flies over with a jump start then your using the earth from the vehicle jumping it. Check Batt leads to the body/chassis and the lead to the engine. Hope this helps

Title: Re: HELP: truck is very hard starting
Post by: Lt.Del on September 17, 2007, 03:13:21 PM

are the new cables the right guage?  If not, it will do as you say it is doing, and get very hot.   

Title: Re: HELP: truck is very hard starting
Post by: shootinmanbwh on September 25, 2007, 09:45:48 PM

Well, I found the problem finally.  I did all of my voltage drops, and everything was ok.  I found that the owner before me put a low torque starter on a 454, and it needs a high torque starter.  thanks for all the help.