Question about Cars & Trucks
Replacing the head at 250k was probably not a good investment.
My advice has always been, if you need engine work at 200k or more, its time for another vehicle because the rest of the parts are still worn out. The normal life of a car or truck in the USA is 200k.
Usually a knocking sound means a rod or main bearing has failed. Which would require an engine overhaul to fix.
Black oil has nothing to do with the pump. The oil should be changed at 500 miles to remove any debris caused by replacing the head. That may fix the problem if there is junk floating around in the oil pan.
If the oil pump has failed, you would have very low oil pressure which would show up on a gauge.
It could cost you more to fix the knock that it did to replace the head.
Posted on Jul 31, 2013
a 6ya expert 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 repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Yes you have to check your pressure with a mechanical gauge first. If the pressure reading is good replace the oil pressure sending unit. They are known to go bad, and oil pumps going bad is rare.
Posted on Dec 31, 2008
Pop the hood and look at the top of the headlight capsule. you should see a single 7mm bolt somewhere in the middle. remove the bolt completely it should be about 6 inches long. once the bolt is removed then use a large flat screwdriver and carefully pry the headlight capsule out from it retaing clips. once the capsule is out then you have 100% access to the bulbs
Posted on Jan 15, 2009
SOURCE: Motor mount replacement at 93000
Your best bet would be to pick up a Chilton manual from autozone. It will give you step by step instructions on how to do all kinds of things with your vehicle, including the motor mounts.
Posted on May 24, 2009
You probably messed up a rod or caused piston damage your going to need more than a head gasket usauly when you over heat a car you causing the pistonts to expand more then they need to causing scouring and exsisive piston ware by the sound of it and the year your better off replacing the whole motor or completely rebuilding the old one wich will cost more then a use motor! good luck!
Posted on Sep 12, 2009
Testimonial: "good advice, easily understood, and written very clearly. thanks"
You need to pressure test the cooling system. Unless you had the heads magnafluxed or inspected very carefully, there could be minute cracks causing the problem.
This is the #1 problem with any engine where boiling takes place due to the expansion power that steam has the capability of producing.
The cylinder walls could also have cracks in them, there could also be a freeze plug that is leaking slightly, causing the engine to overheat as it can't build the proper pressure.
sometimes it's a better move to get a low mileage used motor, than to attempt to repair one that has high mileage and this type of suspected damage.
Posted on Feb 20, 2010
Tips for a great answer:
Dec 23, 2014 | 1999 Nissan Altima
Apr 27, 2012 | 1999 Jeep Grand Cherokee
Mar 12, 2011 | 1999 Dodge Grand Caravan
Nov 17, 2010 | 1999 Jeep Grand Cherokee
Jan 14, 2010 | 2005 Jeep Grand Cherokee
Dec 09, 2009 | 2001 Jeep Grand Cherokee
Sep 12, 2009 | 1999 Jeep Grand Cherokee
Jan 19, 2009 | 1993 Jeep Grand Cherokee
55 people viewed this question
Usually answered in minutes!