I have a 94 exploder v6. i’ve done major work on the engine, cylinder heads, all gaskets, 2 injectors. current situation - car starts fine and runs perfect until it gets hot then starts taking coolant into the #6 cylinder. will a block sealer resolve this problem for me? i’ve read that some of the a…

It sounds like someone missed something in that major engine work. You could try Bars Leak, but it won’t help a big leak. Are you just trying to buy time before replacing the truck or engine?

Never tried high tect Block-sealers, but seen them about. If you rebuilt both heads (valves, springs, etc.)consider starting over with a good short block and your good Top End (and maybe Crank, as reqd.) If ya just paid someone to swap gastets (no machine work-valve job-seals, etc.) and ya want to g…

I’m not a fan of blocker sealers and seldom buy into the cracked head/block diagnosis very much. Was the cylinder head block mating surface inspected and surfaced if necessary? Was the block surface inspected for flatness? What about the intake manifold flanges? Were the intake manifold surfaces on…

A block sealer is a last resort. That said, I had good luck with K & W seal on my 1947 Pontiac. Coolant was getting into the oil. I removed the cylinder head and the block was cracked around a couple of the valves (this was a flathead 6 cylinder engine with the valves in the block). I put the en…

Yeah. What ok4450 said. You can attempt to re-torque the heads. Perhaps the original torque settings were done out of order or one or two of the head bolts have loosened. Re-torque both heads. Make sure that you torque the bolts in proper order. Make sure that the torque wrench is accurate. Use the …

Bar?s now makes a new product called ?Headgasket Fix.? It?s very different from the older ?Headgasket Repair.? It comes in a tall cylindrical bottle. It doesn?t require draining the radiator like most products. It?s simple ? pour it in and go. I used ?fix? on my 1998 BMW 5 series when it began ru…

Best Block Sealer?

Maintenance/Repairs

MikeInNH February 13, 2008, 6:11pm 7

I’ve rebuilt a few engines in my day…and the only time I’ve ever seen this was when there was a flaw in the surface of the head. Pulled the head and had it milled smooth and then reinstalled a new head gasket. I don’t think any sealer is going to fix this.

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