Notices
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

bad hole

Thread Tools
 
Search this Thread
 
Old Sep 19, 2008 | 09:16 PM
  #1  
mcfaddendrafting's Avatar
mcfaddendrafting
Thread Starter
|
Senior User
Joined: May 2008
Posts: 127
Likes: 0
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????
 
Reply
Old Sep 20, 2008 | 06:58 AM
  #2  
mhg's Avatar
mhg
Fleet Mechanic
Joined: Sep 2003
Posts: 1,279
Likes: 0
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
 
Reply
Old Sep 20, 2008 | 11:35 PM
  #3  
mcfaddendrafting's Avatar
mcfaddendrafting
Thread Starter
|
Senior User
Joined: May 2008
Posts: 127
Likes: 0
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.
 
Reply
Old Sep 21, 2008 | 02:16 PM
  #4  
markedman90's Avatar
markedman90
Senior User
Joined: Aug 2008
Posts: 108
Likes: 0
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.
 
Reply
Old Sep 21, 2008 | 02:19 PM
  #5  
quicklook2's Avatar
quicklook2
Post Fiend
Joined: May 2004
Posts: 11,289
Likes: 6
From: Lakewood, Ohio
^^^^^^^hahahahahahahahaha

i only have trojans and they are too big for my f150's little dipstick.
 
Reply
Old Sep 21, 2008 | 02:46 PM
  #6  
RiverRat1964's Avatar
RiverRat1964
Freshman User
Joined: Jul 2008
Posts: 42
Likes: 0
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................................
 
Reply
Old Sep 21, 2008 | 02:58 PM
  #7  
danr1's Avatar
danr1
Lead Driver
15 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2006
Posts: 5,670
Likes: 12
From: Sand Lake, MI
<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......
 
Reply




All times are GMT -5. The time now is 10:28 PM.

story-0
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-1
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-2
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-3
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-4
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-5
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-6
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE
story-7
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Slideshow: Ranking the 5 things owners love about their Super Duty and 5 things they don't

By Joe Kucinski | 2026-04-29 16:36:49


VIEW MORE
story-8
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Slideshow: Ranking all 12 Ford truck engines available in 2026.

By Michael S. Palmer | 2026-04-22 13:32:20


VIEW MORE
story-9
The Best F-150 Deal of Every Trim Level (XL through Raptor)

Slideshow: The best Ford F-150 deal for every trim level (XL through Raptor)

By Joe Kucinski | 2026-04-21 15:59:01


VIEW MORE