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1998 Oldsmobile Bravada dead cylinder
MICHAEL SHARPE
MEMBER
1998 OLDSMOBILE BRAVADA
V12
AWD
AUTOMATIC
213,000 MILES
What to check when 98 bravada has dead cylinder? Pulled spark plug wire off distibtor and does not change sound of motor. The spark plug is firing
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Sunday, September 12th, 2010 AT 3:57 PM
7 Replies
WRENCHTECH
MECHANIC
20,757 POSTS
Verify spark with a spark tester. If you have strong spark, then you probably have a bad injector.
PS, you definitely don't have a V12. You have a 4.3 V6.
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Sunday, September 12th, 2010 AT 4:30 PM
MICHAEL SHARPE
MEMBER
6 POSTS
Yes 4.3 it is geting spark. How do you replace injector?
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Sunday, September 12th, 2010 AT 4:34 PM
WRENCHTECH
MECHANIC
20,757 POSTS
The intake manifold has to come off. You might want to take a compression test before jumping to that conclusion.
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Sunday, September 12th, 2010 AT 4:36 PM
MICHAEL SHARPE
MEMBER
6 POSTS
What should compression be?
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Sunday, September 12th, 2010 AT 5:13 PM
WRENCHTECH
MECHANIC
20,757 POSTS
They should mostly be over 150PSI but it would have to be well under 100 to cause a miss.
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Sunday, September 12th, 2010 AT 5:15 PM
MICHAEL SHARPE
MEMBER
6 POSTS
Checked compression it was 40
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Thursday, September 30th, 2010 AT 3:35 PM
WRENCHTECH
MECHANIC
20,757 POSTS
Well, that is not good news. Probably a burnt valve or something like that but the heads are going to have to be removed and sent to a machine shop.
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Friday, October 1st, 2010 AT 7:36 AM
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