Knocking/ Low radiator - YotaTech Forums


Go Back   >


95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners
Sponsored by:
Click Here

Knocking/ Low radiator

Reply
 
LinkBack Thread Tools Search this Thread
Old 03-20-2007, 08:24 PM   #1
Registered User
Thread Starter
 
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?
crazy_horse3030 is offline   Reply With Quote
Old 03-21-2007, 12:42 AM   #2
Registered User
 
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.
mpavolka is offline   Reply With Quote
Old 03-21-2007, 03:05 AM   #3
Contributing Member
 
MTL_4runner's Avatar
 
Join Date: Jul 2003
Location: Montreal, QC Canada
Posts: 8,807
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.
MTL_4runner is offline   Reply With Quote
Old 03-21-2007, 03:06 AM   #4
Registered User
 
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
 
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
 
Adam F's Avatar
 
Join Date: May 2002
Location: Cincinnati Ohio
Posts: 2,479
Probably a massive head gasket leak, water in the cylinders, hydro locking the motor, hence the knocking.
Adam F is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Coolant going into reservoir--engine getting hot JaredL 84-85 Trucks & 4Runners 14 03-28-2016 09:08 PM
87 4Runner Rough Idle/Misfire issues Sleaker 86-95 Trucks & 4Runners 11 03-26-2016 04:12 AM
Need new radiator for 1994 V6 4wd. Any recommendations? Road Bull 86-95 Trucks & 4Runners 23 10-10-2015 04:55 PM
Contemplating a 4BT swap, tell me your thoughts. RobotMoose Diesel Swaps 8 08-02-2015 11:00 PM
Am I in danger of overheating my Toyota pickup? Jeffreynmandy 86-95 Trucks & 4Runners 21 07-18-2015 08:26 AM


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



All times are GMT -8. The time now is 05:51 PM.


2010 InternetBrands, Inc.