2.5 tdci knock - Ranger-Forums - The Ultimate Ford Ranger Resource


SOHC - 2.3L & 2.5L Lima Engines Discussions and Topics specific to the Lima 4 cylinder engines

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 09-20-2014
Member
Thread Starter
 
Join Date: Sep 2014
Location: Kettering
Posts: 8
2.5 tdci knock

Hello I've just bought a 2007 tdci 2.5 ranger and it has a constant knock, I don't think it's bottom end, I'm hoping it's a tappet as the nock is there all the time, idle, under load, and on deceleration, are they hydraulic tappets or adjustable? Any help would be appreciated
Reply With Quote
  #2  
Old 09-20-2014
RF Veteran
iTrader: (1)
 
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 7,577
We, in North America, don't get to buy those here, which is sad.
4-door Ranger with turbo diesel would be a nice ride.

They do have hydraulic tappets, according to parts list.

Never work on that engine but on other engines if you disconnect 1 fuel injector at a time and then listen for the knock, if it almost goes away then it is a connecting rod knocking on the disconnected cylinder, the "knock" sound is from that cylinder firing, rod slapping crank, so when it is not firing the noise is gone.

Valve train "knock" is usually described as a "tap"

Exhaust manifold leak is sometimes described as a knock
Reply With Quote
  #3  
Old 09-21-2014
Member
Thread Starter
 
Join Date: Sep 2014
Location: Kettering
Posts: 8
Thank you I'll give that a go later and let you know, it's hard to try and decide what it is, either a loud tap or a quiet knock if that makes sense
Reply With Quote
  #4  
Old 09-22-2014
Member
Thread Starter
 
Join Date: Sep 2014
Location: Kettering
Posts: 8
Right here's what I did, tried disconnecting all injectors one at a time, made no difference, also had the rocker cover off and adjusted them to the correct gap also made no difference, I'm at a loss now what this loud tap/knock could be, any ideas anyone?
Reply With Quote
  #5  
Old 09-27-2014
Member
Thread Starter
 
Join Date: Sep 2014
Location: Kettering
Posts: 8
Got to the bottom of the problem, turns out it's a small end ticking/knocking, think this truck has had a hard life from the previous owner as took a gamble and bought it with no records on service history, hopefully this will be the only major problem, replacing all four small ends, big ends, and piston rings
Reply With Quote
  #6  
Old 09-27-2014
RF Veteran
iTrader: (1)
 
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 7,577
What are "small ends" and "big ends"?
That is a slang term I haven't ever heard here in the Colonies
Reply With Quote
  #7  
Old 09-28-2014
Member
Thread Starter
 
Join Date: Sep 2014
Location: Kettering
Posts: 8
The con rod rod bearings, piston end small crank end big
Reply With Quote
  #8  
Old 09-28-2014
Member
Thread Starter
 
Join Date: Sep 2014
Location: Kettering
Posts: 8
The con rod rod bearings, piston end small crank end big
Reply With Quote
  #9  
Old 09-28-2014
RF Veteran
iTrader: (1)
 
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 7,577
Thank you, my ignorance is abated , but unfortunately never cured

We call the small end a bushing, big end a bearing
Reply With Quote
  #10  
Old 09-28-2014
Member
Thread Starter
 
Join Date: Sep 2014
Location: Kettering
Posts: 8
I'll try remember that for the future, I've got the top end off just need to get the oil pan off and out but think I need to remove the anti roll bar and cross member tho unless I take the engine out
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Turbo Diesel Ranger? Meet the Ranger TDCi MTLaccord General Ford Ranger Discussion 26 09-03-2015 10:31 PM
2.3 knock knock 1998 ford ranger 5speed SOHC - 2.3L & 2.5L Lima Engines 0 06-23-2014 03:23 PM
Knock knock, Please help Jack Man 2.9L & 3.0L V6 Tech 3 08-12-2009 09:14 PM
knock knock goes the engine. cdn2x4ranger 2.9L & 3.0L V6 Tech 3 11-04-2007 01:03 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 01:02 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.