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daltont353
Novice
Jun 8, 2016, 5:49 PM
Post #1 of 13
(1526 views)
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i have a gmc jimmy 1995 4.3L V6 2 wheel drive vortec engine and i replaced intake manifold gasket and fuel injectors but my timing wasent right so i had to fix it, it set for about 4 days and now i have all the spark plugs out and i cant turn the crank by hand but it will turn with the starter but not by hand and last week it would turn by hand but since we tryed to start it with the timing not right it wont turn by hand please and advise will be greatly appreciated
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kev2
Veteran
Jun 8, 2016, 6:13 PM
Post #2 of 13
(1523 views)
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well you cannot adjust the ignition timing on this engine SO I guess you are trying to install distributor, and set cam sync.
A scanner will aid this install - setting cam offset or sync.
No problem before your work SO you might want to remove dist and see if that is cause of engine turning problem... then google "gm 4.3 distributor installation" there should be a youtube to help ypu understand and install dist.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 8, 2016, 6:18 PM
Post #3 of 13
(1520 views)
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This is a '95 Kev. The timing is supposed to be adjustable on this engine. They are showing 2 different versions though and one is not.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Jun 8, 2016, 6:19 PM)
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daltont353
Novice
Jun 8, 2016, 6:46 PM
Post #4 of 13
(1514 views)
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yes i was trying to put the distributer in but i need to find TDC so i can install the distributer but i cant turn my engine with a breaker bar i have removed the spark plugs and the belt but i still cant move it and i did this last week trying to find top dead center but i cant turn the engine to get tdc the only way it will turn is with the starter
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kev2
Veteran
Jun 9, 2016, 6:01 AM
Post #5 of 13
(1497 views)
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you rotated engine last week now you cannot - SO whats different ?
some ideas-
I suggested you undo any installations - the distributor , all belts are off , maybe Spray a little oil into plug holes .. tap starter maybe drive is sticking,
how long was it not run?
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jun 9, 2016, 6:08 AM
Post #6 of 13
(1495 views)
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? Just the not turning part? Have you left plug out and exposed to weather all this time? Seems quick but might have "gun" rusted cylinder already and should free up but I don't do that so not sure how long is too long,
T
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daltont353
Novice
Jun 9, 2016, 3:43 PM
Post #7 of 13
(1484 views)
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it ran right before i changed the intake manifold gasket and fuel in jectors wich was about three or four weeks ago but i just took the spar plugs out yesterday and it is under the car port my friend told me to take off the intake and make sure the gasket didnt slip but it hasent i have the intake off and all spark plugs out and i can turn the motor by hand i need to turn it by hand to find TDC and put the distibuter in time but the motor wont turn by hand and i dont know why
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jun 9, 2016, 3:54 PM
Post #8 of 13
(1483 views)
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How are you trying to turn the engine "by hand?" Breaker bar on crank bolt or what? Will it turn if you go either direction or neither just plain locked?
IDK for sure. Did you even possibly drop something inside like a tool that could lock engine?
T
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daltont353
Novice
Jun 9, 2016, 5:40 PM
Post #9 of 13
(1478 views)
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yeh i am using a breaker bar and no i didnt drop any thing down in it but i am thinking some gunk might have fell in but i am not sure and no it wont turn either way and when we crank it with the starter it would turn a little and go back to were it was then it would turn on over its like its bound up in a spot i am thinking i am gonna have to pull the motor and take the heads off to see whats going on but i am trying to avoid that
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 9, 2016, 6:33 PM
Post #10 of 13
(1471 views)
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Did you happen to drop something into the intake?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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daltont353
Novice
Jun 9, 2016, 10:11 PM
Post #11 of 13
(1467 views)
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nope
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 10, 2016, 1:58 AM
Post #12 of 13
(1456 views)
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I don't see another explanation.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
Ultimate Carjunky
/ Moderator
Jun 10, 2016, 4:53 AM
Post #13 of 13
(1448 views)
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Why can the starter spin the crank, but you can't? That doesn't make any sense unless you haven't eaten your wheaties. I'd be careful trying to spin the crank using the bolt. It's only a 7/16 diameter bolt.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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