Hard hitting when starting - Pirate4x4.Com : 4x4 and Off-Road Forum

Trigger · 01-13-2002, 04:22 PM

A friend of mine has a 78 Cruiser with a stock motor with the exception of a Weber carb. When he first starts it, it seems to be hitting kind of hard, like it's getting combustion in the middle of the up stroke. After it starts it runs smooth. He's replaced the distributor in an attempt to correct it already, and mechanically (timing, flywheel, starter, etc.) seems to be in great shape. Any ideas?

Thanks

Cain

DCruiser138 · 01-13-2002, 09:42 PM

sounds like a f motor to me. runs like shit till its warm. i see no problem

Trigger · 01-14-2002, 07:02 AM

Normally I'd agree (I've got a 73), but this just started doing it. It was running good before, even at startup.

TRD · 01-14-2002, 10:08 AM

i thought 78 would have been a 2F.

Screwzer · 01-14-2002, 02:50 PM

78 S/B a 2F. Why'd you dump the Aisen carb? Pretty difficult to diagnose with limited info.... details, details. what have you done to it since it ran good?

Trigger · 01-14-2002, 06:36 PM

Nothing. It was running good when it was shut off after the last trail ride. Next time he went to start it, it started doing this crap. And the only problem is when it starts.

I thought at first that it might be out of time, but it's right on when using a light. The fly wheel and starter are in good shape, and it now has a new distributor as well...he replaced the dist. trying to fix the problem but no good. He also said that all the timing gears look good.

01-13-2002, 04:22 PM	#1 (permalink)
Trigger Registered User Join Date: Jul 2001 Member # 6111 Location: Land of the GBR Posts: 140	Hard hitting when starting A friend of mine has a 78 Cruiser with a stock motor with the exception of a Weber carb. When he first starts it, it seems to be hitting kind of hard, like it's getting combustion in the middle of the up stroke. After it starts it runs smooth. He's replaced the distributor in an attempt to correct it already, and mechanically (timing, flywheel, starter, etc.) seems to be in great shape. Any ideas? Thanks Cain __________________ Perpetual Newbie

01-13-2002, 09:42 PM	#2 (permalink)
DCruiser138 Rock God Join Date: Dec 2000 Member # 2619 Location: kings beach, CA Posts: 1,716	sounds like a f motor to me. runs like shit till its warm. i see no problem __________________ Dustin Crawford --- OPEN DIFF DEUSH'

01-14-2002, 07:02 AM	#3 (permalink)
Trigger Registered User Join Date: Jul 2001 Member # 6111 Location: Land of the GBR Posts: 140	Normally I'd agree (I've got a 73), but this just started doing it. It was running good before, even at startup. __________________ Perpetual Newbie

01-14-2002, 10:08 AM	#4 (permalink)
TRD Zeus of the Sluice Join Date: Nov 2001 Member # 8286 Location: Costa Mesa, Ca Posts: 4,686	i thought 78 would have been a 2F. __________________ -Ryan

01-14-2002, 06:36 PM	#6 (permalink)
Trigger Registered User Join Date: Jul 2001 Member # 6111 Location: Land of the GBR Posts: 140	It' not mine but... Nothing. It was running good when it was shut off after the last trail ride. Next time he went to start it, it started doing this crap. And the only problem is when it starts. I thought at first that it might be out of time, but it's right on when using a light. The fly wheel and starter are in good shape, and it now has a new distributor as well...he replaced the dist. trying to fix the problem but no good. He also said that all the timing gears look good. __________________ Perpetual Newbie

01-14-2002, 02:50 PM	#5 (permalink)
Screwzer Registered User Join Date: Jul 2000 Member # 1310 Location: Nevada City, CA Posts: 765	78 S/B a 2F. Why'd you dump the Aisen carb? Pretty difficult to diagnose with limited info.... details, details. what have you done to it since it ran good?

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