Engine tick and missing - Ranger-Forums - The Ultimate Ford Ranger Resource
Ford Ranger Forum - Forums for Ford Ranger enthusiast!

Go Back   Ranger-Forums - The Ultimate Ford Ranger Resource Arrow Ranger-Forums Technical Engine Forum Arrow 4.0L OHV & SOHC V6 Tech

4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 10-16-2016
Thread Starter

Member
 
I am: Chase
Join Date: Oct 2016
Location: Yakima Wa
Vehicle: 1997 Ranger
Drive Type: 4WD
Engine: 4.0
Posts: 3
Total Props: 0
Engine tick and missing

The engine ticks a little bit and it's missing pretty bad what can cause this?
Reply With Quote
+ 0 -
  #2  
Old 10-16-2016
Member
iTrader: (1)
 
I am: Ron Dean
Join Date: Jan 2014
Location: Vancouver, BC
Vehicle: 1994 Ford Ranger
Drive Type: 4x4
Engine: 4.0
Posts: 4,950
Total Props: 92
Welcome to the forum.

With the limited info I would say you have a bad lifter, bad injector or bad spark.

1997 Ranger 4.0l is an OHV, has over head valves
This means the Cam is in the center of the block and has lifters for each valve sitting on it's lobes, 6 cylinder engine would have 12 lifters/valves, 2 per cylinder .
These are hydraulic lifters, they have an internal valve and spring, they compress to absorb sudden push up from Cam lobe, they use oil pressure to do this, the valve allows oil in easily but it can only go out slowly, smaller hole OUT.
A push rod sits on top of each lifter and it's other end presses against a Rocker Arm above the head.
The Rocker "rocks" on a center fulcrum and that "rocking" pushes down on the valve stem which open the intake or exhaust valve for that cylinder.

Rocker arm is tighten down to push hydraulic lifter down about 1/4 of its compression travel.

If a lifter valve or spring fails it is called a collapsed lifter, because it is no longer pressed tight against the Rocker arm, so will make a "ticking" noise because there is a gap now.
And the valve in the cylinder it controls will not be opening all the way, because of the gap, and full compression of the lifter which doesn't usually happen because of the oil pressure, so could cause a misfire.


Ford Fuel injectors do tick pretty loud sometimes, but it can also be a sign it is failing.
And obviously if fuel injector fails on a cylinder then that cylinder would misfire.

I would get a long smaller hose, like a vacuum hose, and use it as a stethoscope.
With engine idling put one end next to your ear and place the other end on each injector.
Also listen at different place on the valve covers for a lifter tick.


A bad spark plug wire or Coil Pack can ARC the spark meant for a cylinder to closest metal part on the engine, this arcing can sound like a tick noise, and of course no spark at the cylinder would cause a misfire.
Look at engine bay in the dark with engine idling, spark arc is very easy to see, it is bright


And there is a chance that the tick and misfire are not related at all.

Last edited by RonD; 10-16-2016 at 02:18 PM.
Reply With Quote
+ 0 -
  #3  
Old 10-16-2016
Thread Starter

Member
 
I am: Chase
Join Date: Oct 2016
Location: Yakima Wa
Vehicle: 1997 Ranger
Drive Type: 4WD
Engine: 4.0
Posts: 3
Total Props: 0
Thanks a lot I think its a lifter and a bad plug wire buy I'll let you know what it is!
Reply With Quote
+ 0 -
  #4  
Old 10-16-2016
Member
 
I am: Jeff Martin
Join Date: Jul 2016
Location: BC Canada
Vehicle: 1999 Mazda B3000
Drive Type: 4x2
Engine: 3.0
Posts: 364
Total Props: 6
If you tear it all apart down to the lower intake manifold to get at the lifters, my advice to you is to replace them all.
If one is making noise then the rest are probably varnished up pretty good inside _ usually due to lack of oil changes and short runs.
The lifters are sold in sets of "four" anyway, at least for my 3 litre anyway.
Reply With Quote
+ 0 -
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tick tick tick Konkopito 4.0L OHV & SOHC V6 Tech 5 11-18-2014 07:43 PM
Slight Engine Tick and Lean Codes Fox Ridge Ranger 4.0L OHV & SOHC V6 Tech 7 01-21-2013 10:39 AM
2006 Engine Tick ZWilson07 4.0L OHV & SOHC V6 Tech 9 10-17-2011 03:14 PM
07 Ranger fx4. bought 3 weeks ago, engine tick :( 07rangerfx4 General Technical & Electrical 21 10-13-2011 02:08 PM
anyone elses engine tick? Biz 4.0L OHV & SOHC V6 Tech 19 01-22-2008 11:46 PM


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 On
Pingbacks are On
Refbacks are On





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