73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: gold84gmc on April 24, 2009, 07:28:10 am

Title: hard starting
Post by: gold84gmc on April 24, 2009, 07:28:10 am

after my truck is warmed up it starts fine but if i let it cool down a little bit it starts hard, i have to push the gas a little bit and it takes a longer than it should to crank over....any suggestions on why its doing this?

Title: Re: hard starting
Post by: VileZambonie on April 24, 2009, 07:38:04 am

Give us more info on your truck. Do you have a carburetor? Which one?

Title: Re: hard starting
Post by: gold84gmc on April 24, 2009, 08:20:17 am

350 with a q-jet carb

Title: Re: hard starting
Post by: VileZambonie on April 24, 2009, 08:41:47 am

Do you get a puff of black smoke when it does start? I'd check for leaking well plugs.

Title: Re: hard starting
Post by: gold84gmc on April 24, 2009, 10:27:47 am

no black smoke but when it does start hard blue smoke comes out...which means oil, i already know the valve seals are bad but would those cause it to start like that?

Title: Re: hard starting
Post by: VileZambonie on April 24, 2009, 05:10:01 pm

If the fuel bowl drains into the intake #1 your plugs will foul and #2 your fuel bowl is empty which means a harder start. Pull the carb off and seal the well plugs with some JB weld and see what happens.

Title: Re: hard starting
Post by: gold84gmc on April 24, 2009, 07:44:21 pm

im not to good with carbs so do you have any pics or steps on how to do it?

Title: Re: hard starting
Post by: VileZambonie on April 24, 2009, 11:02:54 pm

Just google quadrajet well plugs and you'll probably find 100 articles on how to.