Question about 2001 Hyundai Elantra

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What is the cylinder compression psi fpr the 2.0 liter engine

Engine overheated looks like oil is leaking out from head gasket. Tested compression 3 cyls at 185 psi 1 at 150. dripped oil in the weak one and got 225 psi. what is the usual psi for this engine?

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Usual on 4 cylinder around 175psi.225psi is very high for your car,150psi seems ok,you may have two problems.A leaking head gasket and high compression due to carbon build up on the pistons.Check your Hyundai Dealer to see is this problem is covered under their 100,000 mile warranty,it should be.IF not then
the head needs to come off and had gasket replaced along with clean the top of pistons since they are right there,sounds like and easy fix.also check condition of radiator,and I would rec. replacing thermostat since some Hyundai models had problems with their thermostats

Posted on Jun 15, 2009

  • big9forfun Jun 15, 2009

    usual on 4 cylinder around 175psi.225psi is very high for your car,150psi seems ok,you may have two problems.A leaking head gasket and high compression due to carbon build up on the pistons.Check your Hyundai Dealer to see is this problem is covered under their 100,000 mile warranty,it should be.IF not then

    the head needs to come off and had gasket replaced along with clean the top of pistons since they are right there,sounds like and easy fix.also check condition of radiator,and I would rec. replacing thermostat since some Hyundai models had problems with their thermostats

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You seem to know some about cars, however I will attempt to give you my best answer.

You have a gasket that seals the engine to the head, when you over heat this gasket gets punished and in some cases the head can get warped and the seal between the engine and head is lost resulting in your loss of compression.

You need to remove the head for a better look, take the head to a machine shop and have them check it for warped condition, if so see if it can be machined flat, also look into a rebuilt head, it may just be cheaper to do that then the work to fix your original.

As well your going to have to find the reason the car over heated in the first place..

This might be a good time to see if the car is worth fixing?!

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