cure for hard hot start

**Larry M.** · June 7, 2010, 09:40 AM

Re: cure for hard hot start

Originally posted by William Ford (50517)

Thought I'd share this with you in hope it helps. Had lots of suggestions about my hard hot starting problem on my '67 L-79:flooding, too much advance, bad gas,etc., but was none of above was the problem. With lots of free help by phone from Chuck Hawk( Chuck Hawk's Auto and Performance, Tuscon, AZ.(520)292-0880, and some from Pertronix, decided wasn't getting enough spark to ignite mixture when cranking hot. Sure enough, only 4 V on hot side of coil on cranking. Traced problem to a bad solenoid. With new solenoid get 12V when you turn key and starts right up.

Bill:

Very interesting. This is an often overlooked, but critical area. Not certain if the Pertronix system makes this worse than with points......but 4 volts to the coil is definitely too low.

Thanks for sharing. I'm sure it will help others.

Larry

**Clem Z.** · June 7, 2010, 10:53 AM

Re: cure for hard hot start

that is why GM came out with heat shields for the solenoids. also after years of use the contactor inside the solenoid get burned and need cleaned up

**Bill M.** · June 7, 2010, 11:29 AM

Re: cure for hard hot start

My 67 l 79 does the oposite hard to start when cold always have to give a shot of starting fluid.

**Clem Z.** · June 7, 2010, 12:44 PM

Re: cure for hard hot start

Originally posted by Bill McMorrow (15609)

My 67 l 79 does the oposite hard to start when cold always have to give a shot of starting fluid.

make sure the choke plate is completely closed and check to see if you a pump shot when you first try and start it.

cure for hard hot start

cure for hard hot start

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