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Apr
15
comment Getting the best results sealing head gasket leak with Blue Devil
Or, maybe the best bet is just taking out one spark plug at a time and running it with the plug out, so the local pressure near the engine (which can't immediately propagate to the radiator cap) has less to fight against pushing sealer back to one cylinder when the adjacent one fires...
Apr
15
comment Getting the best results sealing head gasket leak with Blue Devil
Hmm, I realized too the 13psi in the cooling system is not going to be enough to force anything back across the HG when it's taking up to 150psi or so (engine compression) to force the gasses out across the HG...and even then, only sporadically. Is there any way to get pressure that high on the cooling system side? Certainly the radiator can't handle it and the hoses probably can't either, but if the hoses were taken off, the openings blocked and clamped tightly, and a compressor hooked up to where the upper hose belongs, maybe it would be possible..?
Apr
15
comment Trunk lid release
WD-40 is not penetrating oil; quite the opposite...
Apr
15
comment Can I reprogram my car for LED turn signals?
Hmm, I always figured thats what flashers were, but maybe it's a type of circuit breaker that operates from heating up...?
Apr
15
comment Safe resistance between alternator and battery?
I don't know either but it's copied from the site that was linked.
Apr
15
revised Electrical problems due using battery charger as a jump starter
added 608 characters in body
Apr
15
comment Can I reprogram my car for LED turn signals?
Hopefully the computer is just monitoring the rate of the on/off cycle to give the indicator. If the whole cycle were controlled by the computer, wouldn't get faster like it's doing.
Apr
15
answered Electrical problems due using battery charger as a jump starter
Apr
15
answered Can I reprogram my car for LED turn signals?
Apr
14
revised Getting the best results sealing head gasket leak with Blue Devil
added 1429 characters in body
Apr
13
accepted Overheating & coolant loss in 1998 Subaru Outback
Apr
13
answered Overheating & coolant loss in 1998 Subaru Outback
Apr
13
comment Getting the best results sealing head gasket leak with Blue Devil
I actually tried it, and loosening the plugs didn't drop the pressure in the cooling system noticably. I left the vehicle sitting for a few hours to cool, then put the plugs back in. Can't tell yet if it helped though...
Apr
13
revised What is the likelihood that my crankshaft is warped?
fix formatting
Apr
13
suggested suggested edit on What is the likelihood that my crankshaft is warped?
Apr
12
comment Getting the best results sealing head gasket leak with Blue Devil
Yes, whatever I do I'll almost surely change the oil once this is all done. It's cheap and easy and stupid not to do it...
Apr
12
awarded  Yearling
Apr
12
comment Getting the best results sealing head gasket leak with Blue Devil
One other idea I just had...this sounds like it could go bad, but what would happen if I pressurized and heated the cooling system by running the car for a while, then took out all the spark plugs? The idea being to get the pressure in the cooling system to force the sealant back through the HG into the (now depressurized by removing the plugs) cylinders...
Apr
12
comment Getting the best results sealing head gasket leak with Blue Devil
It didn't say so anywhere in the instructions; coolant moving into the overflow tank and not coming back (due to the system being pressurized by combustion gasses) was the original symptom, so seeing that nothing moved was a good sign. I think I'm going to have to go with your idea of leaving it in a couple days and see if things get better.
Apr
11
comment Getting the best results sealing head gasket leak with Blue Devil
So far, mixed results. :( The overflow tank level did not rise during the 50-minute idling step, but high pressure did build up, and moved coolant into the overflow tank after I took it for a fairly light test drive. I only used half the bottle originally, so after letting it cool down I've added the other half and running it again. We'll see what happens but I'm not too hopeful right now...