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Infamous 95 4.3 issues kinda

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  #11  
Old 01-16-2021, 11:49 PM
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Originally Posted by Dkchance74 View Post
Mine has 2nome for brake booster and smaller one on opposite side
I had misread this tidbit, sorry
yeah just connect the VAC side of the checkvalve T to the manifold, connect your 4WD hookup to the manifold, and then connect the brake booster.
 
  #12  
Old 01-17-2021, 12:04 AM
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Originally Posted by Mods View Post
I had misread this tidbit, sorry
yeah just connect the VAC side of the checkvalve T to the manifold, connect your 4WD hookup to the manifold, and then connect the brake booster.
the brake booster has its own vacuum on the intake. I need to know what all hooks up to the other one. A pic would be even better. Also would like to see the 2 valves on drivers side hook up to. I believe the round one goes to the rear charcoal canister.
 
  #13  
Old 01-17-2021, 01:34 AM
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Originally Posted by Dkchance74 View Post
the brake booster has its own vacuum on the intake. I need to know what all hooks up to the other one. A pic would be even better. Also would like to see the 2 valves on drivers side hook up to. I believe the round one goes to the rear charcoal canister.
i need to see a picture of your under-hood situation and what vac lines you need to hook up, i own a 1999 Second gen, you have a first model year 1995 2nd gen. the setups are very different but some key things are the same and some universal knowledge of how motor vacuum systems work can be applied.
 

Last edited by Mods; 01-17-2021 at 03:56 AM.
  #14  
Old 01-17-2021, 03:21 AM
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Originally Posted by Dkchance74 View Post
Is the necessary just by changing the cap and rotor?
Not neccessarily, but for any diagnostics involving a fuel/air/spark problem try to eliminate as many of the unknowns from the equation.
We have seen several such problems and finally turned out to be the ignition being off. These engines are quite sensitive on that end.

Ignition timing being off can cause the driveability issues you described. Lack of power but once up on rpm it seems o.k.
Also this will in most cases not trigger codes. Be aware that these problems can cause damage to the engine internals.
 
  #15  
Old 01-18-2021, 02:00 PM
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Originally Posted by error_401 View Post
Not neccessarily, but for any diagnostics involving a fuel/air/spark problem try to eliminate as many of the unknowns from the equation.
We have seen several such problems and finally turned out to be the ignition being off. These engines are quite sensitive on that end.

Ignition timing being off can cause the driveability issues you described. Lack of power but once up on rpm it seems o.k.
Also this will in most cases not trigger codes. Be aware that these problems can cause damage to the engine internals.
turns out intake gaskets are bad
 
  #16  
Old 01-19-2021, 02:22 AM
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Originally Posted by Dkchance74 View Post
turns out intake gaskets are bad
i dont remember anything being mentioned about having the plenum off, guess they may have unsealed coincidentally eh?
 
  #17  
Old 01-19-2021, 07:12 AM
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Originally Posted by Mods View Post
i dont remember anything being mentioned about having the plenum off, guess they may have unsealed coincidentally eh?
At the beginning I had put new spider injectors in it
 
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