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Author Topic: hard starting  (Read 3358 times)

Offline gold84gmc

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hard starting
« 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?
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92 buick century custom 3.3L

Offline VileZambonie

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Re: hard starting
« Reply #1 on: April 24, 2009, 07:38:04 am »
Give us more info on your truck. Do you have a carburetor? Which one?
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline gold84gmc

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Re: hard starting
« Reply #2 on: April 24, 2009, 08:20:17 am »
350 with a q-jet carb
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92 buick century custom 3.3L

Offline VileZambonie

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Re: hard starting
« Reply #3 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.
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline gold84gmc

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Re: hard starting
« Reply #4 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?
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Offline VileZambonie

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Re: hard starting
« Reply #5 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.
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline gold84gmc

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Re: hard starting
« Reply #6 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?
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92 buick century custom 3.3L

Offline VileZambonie

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Re: hard starting
« Reply #7 on: April 24, 2009, 11:02:54 pm »
Just google quadrajet well plugs and you'll probably find 100 articles on how to.
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10
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