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 Post subject: Lurchy drive
PostPosted: Thu Apr 26, 2018 4:31 pm 
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Joined: Thu Oct 06, 2016 4:09 pm
Posts: 10
Location: Portland, OR.
Hi all,

I have a 1980 chevy luv. I recently did an overhaul on the engine, replacing crank and connecting rod bearing, new rings, seals and gaskets. I had the webber tuned at a shop to pass DEQ. I've installed a new fuel pump. It is slightly higher pressure than recommended for the weber setup. I tried to install a fuel regulator from summit but it completely restricted flow. (So this could answer my own question.)

Other than what is mentioned, the truck is stock with all the smog/erg stuff still equipt.

I have been experiencing a surge/lurch during driving. Kind of like what you get when in reverse. Always while cruising at the middle top of a gear and it seems like it decided to do this once it got warmer.

Thank you for your time.

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Pony | 1980 Chevy Luv


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 Post subject: Re: Lurchy drive
PostPosted: Sat Apr 28, 2018 7:20 pm 
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Addicted to LUV

Joined: Sun Jun 06, 2004 11:48 pm
Posts: 6192
Location: Whittier, (So). Cal.
Just a guess here but maybe a vacuum leak? As far as fuel pressur, I ran a return line to the tank so it's a fuel recirculating set up and the carb. just takes what it needs. Works good for me.

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 Post subject: Re: Lurchy drive
PostPosted: Tue May 08, 2018 5:22 pm 
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Joined: Thu Oct 06, 2016 4:09 pm
Posts: 10
Location: Portland, OR.
I will see about replacing the vacuum lines and write back about the effects.

Thanks
pony

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