I just spent $75 at a shop and had the mechanic tell me that my #5 cylinder is 0 pressure. Here is the thing; although i have a rear main seal leak and blowby thru the dipstick(not alot), my car runs excellent. no loss in horsepower no smoke out of tailpipe at all.so my question is.....If my #5 cylinder...

Does any one know if you can surface a 2003 Ford 6.0 liter diesel head and if so how much can you take off?

Ok, I have a 98 GM 2.2L block and all internals, with a 97 head on it. Both motors came from S-10s. From the research I did, with the 98 block and 97 head, I have increased the compression ratio by about 1.5-2 points, which puts me in the 10.5-11:1 range. Pretty high for a non-modded motor. Here's...

Why are cooling system in motor vehecle engine sudject to overpressure?

This could be a weld repair that was not completely finished. Or it could have been an amateur attempt at porting. It would be hard to say without seeing them. You should contact your local engine builder and let them have a look. If you need a number for someone in your area, please contact me.