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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old Sep 19, 2008 | 09:16 PM
  #1  
mcfaddendrafting's Avatar
mcfaddendrafting
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bad hole

(87 f250 302 efi 4wd) I completely lost all compression in #8 cylinder my dad says its a hole burnt in the piston if this is so then what would cause such a thing? It had plenty of oil. I set the timing to 11 d btdc with out the brain plug thing in. I dont understand. anyway this would explain why it started pushing oil out the breather tube and every where else for that matter. did I do something wrong when I swapped engines????
 
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Old Sep 20, 2008 | 06:58 AM
  #2  
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mhg
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From: savannah,ga
check where the PCV valve hose connects to the intake
if it is at the rear of intake then that will most likley be the cause
this will cause the #8 cyl to run lean
 
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Old Sep 20, 2008 | 11:35 PM
  #3  
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mcfaddendrafting
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Yes the pcv is on the back of the intake but theres nothing wrong with it. I just dont understand how it can just go bad.
 
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Old Sep 21, 2008 | 02:16 PM
  #4  
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markedman90
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From: Barrington, Il.
Weak / drippy injector, poor fuel atomization, hot spot on the piston crown. Try putting a small balloon on the dipstick tube (dipstick out) and see if it tries to blow up or blow off.
 
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Old Sep 21, 2008 | 02:19 PM
  #5  
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quicklook2
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From: Lakewood, Ohio
^^^^^^^hahahahahahahahaha

i only have trojans and they are too big for my f150's little dipstick.
 
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Old Sep 21, 2008 | 02:46 PM
  #6  
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RiverRat1964
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From: Jackson, Mn
Go to the $ store, and get the water balloons and RUBBER BANDS, NOT rubbers, I did that little trick to my 91 F150 before I got it, just to be on the safe side, only cost me $2.5o.............

Beats the crap out of $25o.oo................................
 
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Old Sep 21, 2008 | 02:58 PM
  #7  
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danr1
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<i>I dont understand. anyway this would explain why it started pushing oil out the breather tube and every where else for that matter.</i>

Given this statement what is the point of having the OP chase down balloon's?

Now the name of the thread!!! "Bad hole" the content here is not the first thing that comes to mind when reading it! lol

Though it may be a warning of some kind to us guys here......
 
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