Low compression on #1 and #2...

The TC seems to have been down on power lately. I pulled the plugs and #1 was kind of white, the rest looked good. I did a quick compression test.
#1 - 80
#2 - 80
#3 - 120
#4 - 120

That was with all plugs removed. I installed #2 and checked #1 again and got the same result. I guess a leakdown test is the next thing, but I'm guessing it is head gasket time.

Any opinions welcome.
Clay

Sounds like it might a blown head gasket, since you have low readings in adjacent cylinders.

I don't have leakdown tester but I do have a compressed air valve holder. I turned the engine until the timing cam bump was on the center mark. I screwed it into #1 and put 25psi on it and I could hear the air coming out of #2.

Guess that means head gasket. Oh well, could be much worse.

By the way, this is the second time the head gasket has blown between 1 & 2. It happened to the PO in 2007, about 80,000 miles ago. The head was surfaced at that time. I guess I should replace the head bolts too since these have already been reused once.

Make sure you chase the threads in the block, and use NEW head bolts

While you have the head off, have the injectors tested,cleaned, and flowed, and replace fpr since its cheap insurance.

make sure you have brown top injectors too. I have bought a couple cars with blown head gaskets and they had the wrong injectors.

The head is off, see post http://natomessageboard.com/ultimatebb.p...1;t=024086

Not real obvious like the previous blown gasket...

By the way, this is the second time the head gasket has blown between 1 & 2. It happened to the PO in 2007, about 80,000 miles ago. The head was surfaced at that time. I guess I should replace the head bolts too since these have already been reused once.