YotaTech Forums  

Go Back   YotaTech Forums > Toyota SUV & Truck Tech > 95.5-2004 Tacomas & 96-2002 4Runners
Sign in using an external account
Register Forgot Password?
Search


95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners

Welcome to Yotatech!
Welcome to Yotatech,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
LinkBack Thread Tools Search this Thread
Old 03-20-2007, 08:24 PM   #1
Registered User
Personal Sales Rating: (0)
 
crazy_horse3030's Avatar
 
Join Date: Mar 2007
Posts: 37
Knocking/ Low radiator

Buddy of mine has 4 cylinder toyota tacoma. His radiator fluid level keeps dropping but he says he is not experiencing a leak. Now the motor is knocking. What could the problem be?
This ad is not displayed to registered members.
Register your free account today and become a member on Yotatech!
__________________
1998 Toyota Tacoma
2.7 liter 4 cyl.
Pacesetter Header
Magnaflow Performance Muffler w/ dual exhaust
Smittybilt brushguard
2 KC Daylighters 150w each

Horsepower is how fast you hit the wall, torque is how far you take the wall with you
crazy_horse3030 is offline   Reply With Quote
Old 03-21-2007, 12:42 AM   #2
Registered User
Personal Sales Rating: (0)
 
mpavolka's Avatar
 
Join Date: Sep 2006
Location: Tacoma, WA
Posts: 310
Check the coolant for oil, as well as oil for coolant. This would be a head gasket, but the knocking is a little harder to diagnose.
__________________
99' 4Runner SR5 5spd 3.4L
Sonoran Steel 7.1/7.2/OME891
Previous Vehicles: 1985 4x4, 1990 4Runner
mpavolka is offline   Reply With Quote
Old 03-21-2007, 03:05 AM   #3
Contributing Member
Personal Sales Rating: (0)
 
MTL_4runner's Avatar
 
Join Date: Jul 2003
Location: Montreal, QC Canada
Posts: 8,807
Send a message via AIM to MTL_4runner
Ditto to above.

Coolant doesn't just disappear, it has to go somewhere. Tell him to pull the spark plugs and look at them. If there is one or more that is super clean (ie no brown combustion deposits), you know you have a head gasket leak in those cylinders.
__________________
- Jamie

1996 4Runner SR5 4X4 Auto

Deckplate Mod, Hayden Tranny Cooler, Amsoil Air Filter, OME 881/906 N86C/N91SC Lift

Best OBD II scan tool I have used!.

.....and I am AMERICAN!
MTL_4runner is offline   Reply With Quote
Old 03-21-2007, 03:06 AM   #4
Registered User
Personal Sales Rating: (0)
 
tampabayota's Avatar
 
Join Date: Jul 2006
Location: TAMPA BAY
Posts: 460
how much coolant is being lost ,and whats the time frame.remember oil and water dont mix ,so it should take a while before the coolant shows up in the oil pan. does this make sense.
tampabayota is offline   Reply With Quote
Old 03-21-2007, 07:13 AM   #5
Registered User
Personal Sales Rating: (0)
 
hross14's Avatar
 
Join Date: Feb 2006
Location: Austin Texas
Posts: 1,485
Check the weep hole on the bottom of the pump--sometimes it leaks from there but you dont notice--run a finger under it and see if it is wet.

Knocking--Time for a 3.4 upgrade?
hross14 is offline   Reply With Quote
Old 03-21-2007, 05:17 PM   #6
Registered User
Personal Sales Rating: (0)
 
Adam F's Avatar
 
Join Date: May 2002
Location: Cincinnati Ohio
Posts: 2,479
Send a message via AIM to Adam F
Probably a massive head gasket leak, water in the cylinders, hydro locking the motor, hence the knocking.
Adam F is offline   Reply With Quote
Old 03-21-2007, 05:17 PM
Yotatech
4WD Truck




Paid Advertisement
Reply

Tags
4runner, fluid, knocking, radiator

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Knocking? celica860 86-95 Trucks & 4Runners 2 04-26-2007 12:18 PM
Low-Tech Low hassle PS fluid change Reldnew Maintenance & Repair Archives 1 08-24-2003 09:32 AM
Low RPM knocking sound.... diagnosis please! J 95.5-2004 Tacomas & 96-2002 4Runners 27 07-31-2003 05:23 AM
Knocking! Help! DyeBoi 95.5-2004 Tacomas & 96-2002 4Runners 10 07-19-2003 12:14 AM
Knocking jim628 95.5-2004 Tacomas & 96-2002 4Runners 2 05-08-2003 03:15 PM


All times are GMT -8. The time now is 06:59 PM.


2010 InternetBrands, Inc.