2002 TL with V-Tech motor, all new plugs, coil packs, timing belt. 142,000 miles. Has been misfiring with loss of power, and one plug in particular is the culprit as I pulled them. However, I'm losing coolant internally and suspect head gasket. Trying to hold on to the car for a while yet. I cleaned the intake ports, changed the EGR, but still bad loss of power. I tried every head gasket fix out there (liquid) and some worked for a while, but then the misfire came back. Does anyone know of a product or tip that I can use to fix this? I just put a new tranny in there and don't want to give her up!! Thanks.

 

Have the cooling system pressure checked.

 

What pressure value am I looking for? The hoses are pressurized and rock solid when hot. Thanks.

 

a pressure test will simulate running pressure of 14-16 lbs
so you can find the leak if external
and internal it will spit fluid out the plug hole

liquid fixes are band-aids at best, leave a mess inside at worst

must remove the cyclinder head and replace the head gasket
have head ckd at shop for straightness- replace valve seats if needed etc

repeated overheat will kill the head= replacement needed