Question about 2002 Toyota 4Runner
My 92 toyota 4runner 4X4 6cyl 423,000mi. is "missing" whenever I go over 75mph. My RPMs drop to 1000 then shoot back up within seconds. I dont seem to lose any speed. Its an old engine but I have been replacing parts as they go over the years. My Spark plugs get oil on them. I was told just to keep changing them because the problem is more expensive to fix than it is just to change the spark plugs once every couple of months. I am thinking it is a problem with the Fuel pump. I am willing to drop the tank to take a look but I don't know if it should be full or empty when I drop it. But before I take the trouble or risk to do so I would like to know if there is any other possible things that could cause such a problem.
Sounds like the guides on your vallves are worn out letting oil bypass into cylider they need replaced if you are going to drop tank to check fuel pump by all means empty it first for your ease and safety also hope this helps but still think your looking at a valve job
Posted on Aug 23, 2008
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Feb 27, 2015 | 1994 Toyota Camry
Feb 07, 2015 | Cars & Trucks
Aug 11, 2011 | Honda Accord Cars & Trucks
Aug 15, 2017 | 2002 Chevrolet Cavalier Coupe
Mar 17, 2010 | 2001 Ford Mustang
Feb 24, 2010 | 2000 Jeep Cherokee
Oct 26, 2009 | 1991 Toyota Pickup
May 05, 2009 | 2002 Toyota Camry
Jan 01, 2009 | 1990 Toyota Celica
94 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: