2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

P0306 and low compression

Thread Tools
 
Search this Thread
 
Old Jun 13, 2020
  #1  
Dmoryl13's Avatar
Thread Starter
|
Member
Joined: Jun 2020
Posts: 4
Likes: 0
From: Phoenix
P0306 and low compression

Looking for some help please

2001 ford ranger 3.0 by
200k miles
Dry compression test was low: 90psi
wet test: 120psi
I just replaced all pistons and rings
New lifters and rods
new gaskets
new oil
new coolant
And some other new stuff but I dont think its relevant to my problem

Check engine light only blinks if at idle for a while
seems to run fine other than at idle
there is a ticking noise that sounds like it's coming from the lifter/valve area for cylinder 6, but only happens when at operating temperature and at idle. Goes away when I accelerate in the slightest.

I know the dry and wet test should tell me the rings are the problem but I literally just installed them 3 weeks ago and truck ran great for 2 weeks till now I have this misfire code again. It's just hard for me to believe my rings could go bad this quickly.
 
Reply
Old Jun 14, 2020
  #2  
Dmoryl13's Avatar
Thread Starter
|
Member
Joined: Jun 2020
Posts: 4
Likes: 0
From: Phoenix
Originally Posted by Dmoryl13
Looking for some help please

2001 ford ranger 3.0 by
200k miles
Dry compression test was low: 90psi
wet test: 120psi
I just replaced all pistons and rings
New lifters and rods
new gaskets
new oil
new coolant
And some other new stuff but I dont think its relevant to my problem

Check engine light only blinks if at idle for a while
seems to run fine other than at idle
there is a ticking noise that sounds like it's coming from the lifter/valve area for cylinder 6, but only happens when at operating temperature and at idle. Goes away when I accelerate in the slightest.

I know the dry and wet test should tell me the rings are the problem but I literally just installed them 3 weeks ago and truck ran great for 2 weeks till now I have this misfire code again. It's just hard for me to believe my rings could go bad this quickly.

Update: was just a faulty gasket
 
Reply
Old Jun 14, 2020
  #3  
Grumpa's Avatar
Member
Joined: Oct 2017
Posts: 366
Likes: 42
From: Indiana
Glad you figured it out. How did you figure it out? Which gasket?
 
Reply
Old Jun 14, 2020
  #4  
Dmoryl13's Avatar
Thread Starter
|
Member
Joined: Jun 2020
Posts: 4
Likes: 0
From: Phoenix
Just started tearing down and saw the rubber gasket between bottom intake manifold and motor was completely torn in half. Knew since I just replaced about everything that I didnt have to go further. Definitely grateful that was all
 
Reply
Old Jun 14, 2020
  #5  
Dmoryl13's Avatar
Thread Starter
|
Member
Joined: Jun 2020
Posts: 4
Likes: 0
From: Phoenix
Actually still need help, guess I jumped the gun and thought it was all fixed. Code came back, same symptoms. Please help
 
Reply
Old Jun 15, 2020
  #6  
Grumpa's Avatar
Member
Joined: Oct 2017
Posts: 366
Likes: 42
From: Indiana
Well.. I have to ask:
1: New pistons and rings... so I assume you had cylinders reworked?
2: Did you inspect the rockers for wear when replacing the pushrods and lifters?
3: Any work done to the heads other than just cleaned up?
4: What trouble code? Even if CEL doesn't stay lit, there may be a stored code.
Please mention "other new stuff" because it actually could be relevant. It gives a better picture of what you got going on.
 

Last edited by Grumpa; Jun 15, 2020 at 03:14 AM. Reason: added info
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Dave_in_fl
SOHC - 2.3L & 2.5L Lima Engines
23
Jan 21, 2019 06:02 PM
Skittlesdad
2.9L & 3.0L V6 Tech
9
Jul 23, 2017 01:20 AM
DetroitFord
2.9L & 3.0L V6 Tech
14
Nov 6, 2016 04:39 PM
BLIVIT3@GMAIL.COM
2.9L & 3.0L V6 Tech
2
Sep 19, 2016 08:54 AM
Trevor.Veal
2.9L & 3.0L V6 Tech
1
Sep 6, 2014 12:12 PM




All times are GMT -6. The time now is 08:23 AM.