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03-18-2011, 05:36 PM | #1 |
Registered User
Join Date: Mar 2011
Location: huntington beach ca
Posts: 3
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ghost problem with new motor
so i just built a new 350 for my 69 cst dropped it in fired it up and now it wont act right it wont time at all ive re dropped the distributor and its dead on the chain is dead on also ive re adjusted the valves nothing still it runs rough really rough hard to start wont idle unless i turn the idle all the way up and when i throw it into gear it dies instantly!!! im exhausted on every problem im stuck on this one and need an outside perspective my next move is going to be replacing plug wires maybe not enough spark idk if some one has a clue please do tell this is my first engine build by myself but i do have experience.....never seen anything like this
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03-18-2011, 05:56 PM | #2 |
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Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,227
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Re: ghost problem with new motor
Sounds like a bad vacuum leak. Sometimes a guy uses a carb that doesn't match the manifold & it leaves a large opening. Make sure all the tubes in the carb & manifold are used or pluged. I dought if the problem is plug wires.
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03-18-2011, 06:05 PM | #3 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,947
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Re: ghost problem with new motor
Plus you need to get it diagnosed somehow before you go cranking and cranking on a brand new rebuild. It's a good way to lose a camshaft if its a flat tappet cam.
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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03-18-2011, 06:25 PM | #4 |
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Join Date: Oct 2009
Location: Gardnerville Nv No Mo Cali!!
Posts: 869
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Re: ghost problem with new motor
Did you degree the cam? I'm only asking because I'm one in a million that has actually got a bad grind and my motor was acting somewhat the same. The flats on some of the lobes weren't and the valves were hanging open.
Do a compression check to determine it. |
03-18-2011, 07:06 PM | #5 |
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Join Date: Mar 2011
Location: huntington beach ca
Posts: 3
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Re: ghost problem with new motor
i have not degreed the cam it was used but minimal wear my friend took it out of his camaro cus it was too much for him i replaced the lifters and used it. Its a crane cams energizer with a 440/440 lift pretty beefy but its what i wanted and hey it was free. and i just fixed a stripped screw on the back of the carb that would not tighten like i said it runs just not well idk what else could b done
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03-18-2011, 09:14 PM | #6 |
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Join Date: Feb 2011
Location: Riverbank, Ca
Posts: 1,006
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Re: ghost problem with new motor
Fuel/ air ratio
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Rob 1971 c10 - ground up in progress Tripp's Speed Shop Build - http://67-72chevytrucks.com/vboard/s...d.php?t=589750 |
03-18-2011, 09:18 PM | #7 |
Still Just Havin Some Fun!
Join Date: Jun 2007
Location: Piedmont, Oklahoma
Posts: 1,145
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Re: ghost problem with new motor
intake leak.
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a green one with some stuff done to it.... |
03-18-2011, 09:22 PM | #8 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,947
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Re: ghost problem with new motor
New lifters on an old cam will eat the lifters. Same as if you use old lifters on a new cam, the old lifters will destroy a new cam. Cams and lifters should always go together if they are installed used.
Gary
__________________
'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
Quote:
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03-19-2011, 12:09 AM | #9 |
Registered User
Join Date: Mar 2011
Location: huntington beach ca
Posts: 3
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Re: ghost problem with new motor
well tomorrow im going to double and tripple check the manifold but i dont hear a vacum leak but i will check and i had the air and fuel ratio at 2 turns i moved it to 2 1/2 turns for the bigger cam i've been messing with the timing cus to b honest i mite have the cam and crank sprocket off a tooth but i want to make sure thats it first before i rip back into that cus it is in the truck. umm if anyone else has a clue please do tell and ill keep u guys posted as well thanx
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