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#1 |
20psi boost
Join Date: Dec 2009
Location: Harrisburg
Posts: 759
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You are talking about the 3 plugs between the spark plug holes, because if you are I was working on mine today and was not able to get them out.
I asked at toyota and they said to use a big breaker bar but I had no luck with that so I put rtv on top of the plugs for now. I may try again when the head is back on. |
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#2 |
3" Exhaust
Join Date: Aug 2009
Location: Florida
Posts: 87
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Yes those are the plugs, anyone have a little light on the subject?
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1987 Supra 7MGE - Auto - Stock - White Previoius Toyotas; 1992 Toyota Celica Gt, (Sold) 1988 Toyota Celica Alltrac Turbo (Died) |
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#3 |
Intake
Join Date: Dec 2009
Location: Pearl City, HI
Posts: 33
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Those plugs are not in anyway connected to the coolant passages, they are oil passages from valve cover to valve cover. You will need a large allen head type socket. When you remove the #3 gasket, you can either replace it or use washers to seal them off. I think Napa carries the large brass washers. Or you can use Toyota FIPG or Honda Bond to seal them. The #3 gasket helps keep the debris from falling in the valley. Since I clean mine every so often, I decided not to replace the #3 gasket. So far no oil leak for over a year already.
As for your other problems, are you getting any engine codes? Also check your radiator cap, replace if you have not replace it yet. For missing, check your plugs, rotor and cap. Good Luck!! |
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#4 |
20psi boost
Join Date: Dec 2009
Location: Harrisburg
Posts: 759
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not the top plugs, the ones lower between the spark plug holes
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#5 |
3" Exhaust
Join Date: Aug 2009
Location: Florida
Posts: 87
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Ive got a new radiator cap, hoses, I flushed the coolant system after the hg repair, new water pump, new thermostat, Im def burning water, hince the miss over 1000 rpms no miss only at idle, the smoke from burning water goes away above a grand as well. Im getting coolant in the combustion chamber but not in the oil and no oil in water.
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1987 Supra 7MGE - Auto - Stock - White Previoius Toyotas; 1992 Toyota Celica Gt, (Sold) 1988 Toyota Celica Alltrac Turbo (Died) |
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#6 |
Supra Forum Moderator
Join Date: Nov 2009
Location: Green-Ohio
Posts: 1,297
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is it cold only missfire?
The leak may occur only as the engine cools down alter it's shut down, or it may be continuous. Either way, the leaking coolant enters the combustion chamber while the engine is off. This fouls the spark plug, causing the misfire during the engine's first cold start. Once the plug has a chance to clear itself and begin firing, the misfire goes away, but not before the misfire code is stored. If any more coolant continues to leak as the engine warms up, it's burned because the plug is no longer fouled. I would suggest renting a rad pressure tester or go buy one for 60 bucks from harbor freight. pressure the rad system according to the psi on the rad cap (13 max) and see what sprays! good luck
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![]() 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines : |
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#7 |
3" Exhaust
Join Date: Aug 2009
Location: Florida
Posts: 87
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Actually its not as bad when the engines cold, it kinda seems to get worse after its warmed up. Holds temp though. Useally a little below half way mark I keep coolant in it other wise it probley would be overheating. Im pretty sure the coolant is only getting in while its running. The water level dosent go down after its been sitting. Only after you run it.
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1987 Supra 7MGE - Auto - Stock - White Previoius Toyotas; 1992 Toyota Celica Gt, (Sold) 1988 Toyota Celica Alltrac Turbo (Died) |
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