Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Reply
 
Thread Tools Search this Thread

  #1  
Old 06-03-2009, 08:11 PM
Sky King Sky King is offline
Liking the Ford Ranger Forum
 
Join Date: Jun 2009
Posts: 16
Default 2000 3.0L Valve issues

We have a 2000 3.0L (280K miles) and we replaced the heads (remanufactured) about 40K miles ago. The valves seats appeared to have moved down and lost their fit. The valve landings looked great. We replaced the heads with remanufactured and the truck ran great.

Now, 40K miles later, the truck is running bad again and one mechanic (a friend) is telling me we have low compression on the 1,4, &6 cylinder. He checked and is sure the valves are not sealing. He says we have 50 pounds and 35 pounds of compression on those cylinders. The engine is running rough, better at higher RPM of course.

Previously, my son brought this truck to the dealer and they said he needed the injectors cleaned (we had already done thisa few months back, prior to him taking the truck to the dealer. (We used the super duper Ford injector cleaner system)) More info... It was this same dealer that identified the valves leaking previously and they were correct (when we replaced the heads). I find it a odd that that same dealer did not identify the valves leaking, low compression, this time. So we are at odds on what to do. The work...I don't care about, I'll do the heads again, but I'll surely be a tad testy if I pull these heads and there is nothing wrong. I think at the least, I'll get our compression testor from work and check them myself.

My concern is... I heard there was a problem with 3.0L engines having valve seat issues. It think a failure in such a short time is cause for concern and it makes me a bit apprehensive in going into the engine unnecessarily. If I fix this thing again, can I expect more of the same. Is there an issue I should be aware of ?

Any thoughts or comments are welcome and apprecaited.

Sorry for being long winded but....the more information the better.

Take Care,
Gene

Last edited by Sky King; 06-03-2009 at 08:15 PM.
Reply With Quote
  #2  
Old 06-09-2009, 10:23 AM
Psychopete Psychopete is offline
Psycho Pete
 
Join Date: Jun 2009
Posts: 1,489
Default

Might be worth while to do a poor man's leak down test, get some air pressure into the cylinders (there are docs on how to build a leak down tester fairly inexpensively out there), and listen for air in the exhaust, intake, crankcase, and check the cooling system for bubbles to find out where the compression is going when the cylinder is at top dead center on the compression stroke.

Pete
Reply With Quote
  #3  
Old 06-10-2009, 08:59 AM
Sky King Sky King is offline
Liking the Ford Ranger Forum
 
Join Date: Jun 2009
Posts: 16
Default

Thanks Psychopete. I have a friend...just one....ha ha. He checked the engine out and suggested I pull the valve covers and then we can do a leak down (He has all the equipment). I didn't realize there are other avenues to explore...the timing chain has never been replaced, etc... I can't imagine the heads going bad so soon. I'm tempted to pull the engine and rebuild it complete but only if it is necessary. This is a spare vehicle.

Thanks again,
Gene
__________________
Cheers,
Gene
1991 Ranger, 2.3L (400K miles)
2000 Ranger, 3.0L (280K miles)
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel line connection issues elliott9204 3.0 Vulcan Tech 19 06-22-2009 05:08 PM
91 dome light issues dogboy Electrical Tech 0 06-02-2009 12:39 PM
94 fuel pump issues pendelton Electrical Tech 2 05-28-2009 04:34 AM
Where is my Egr Valve Located on my Ford Ranger 4.0l Efi 2000? Sam L General Tech 2 05-04-2009 12:23 PM
me again with the 1991 ford ranger 4x4 issues? nonnaleveille General Ford Ranger Discussion 1 01-17-2009 02:33 PM