Where is the Fuel pressure Regulater on a 1991 Mitsubishi Mighty Max 4X4 3.0L V6?....can i get a picture of the whole engine pointing it out if you can please.
Re: Where is the Fuel pressure Regulater on a 1991...
I found this picture. At the front of the engine to the left of the round opening on the square intake. The glove is sitting on the fuel rail. At the front is the pressure regulator.
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Hi, I own an 86 Mighty Max truck myself. Is there anyway you can get the code number for the engine light coming on. It could be many things that cause this problem. Fuel filter, EGR, Clogged Catalyst, Sparkplug Misfire, Cracked Distributor Cap, the list goes on. It needs to be determined if the problem is fuel or electrical related to help diagnose the problem.
The problem with the truck sitting so long with any amount of fuel in the tank is that it turns into varnish. You may have to drop the fuel tank to make sure it is clean. Also the fuel pump may be locked up from the varnish. Make sure all the fuel lines are clear before you reconnect them. You may have problems with the injectors too. I am guessing this is a fuel injected engine? If not, you may only have to clean out the tank, fuel lines and carburetor.
I would suggest it may be your fuel pump. If the vehicle runs fine when it is cold but after it gets hot it lugs up hills, backfires and seems like it has no power. I would replace the fuel pump this is just a suggestion. Hope this helps tim
You have fuel flow but the question now is are the injectors pulsing. Given the year of the truck my gut says your ECU, Engine Control Unit, has failed. Mitsubishi had issues with the capacitors in their early 90's cars, trucks SUVs. I have been thru this with two monteros and one 3000GT, very common. To check your injectors rent a set of NOID lites from Autozone our such. Remove an injector plug and itstall a noid light. Turn the engine over, if no flash, no pulse. Remove the ECU and carefully open it up. Look for the capacitors, there should be 3, look under the capacitors on the board; if there is a grease like substance, often time it has a green hew to it, then the capacitor(s) have failed. It may be possible to replace the capacitors or simply purchase a rebuilt ECU. Be ceratin the MD number matches on the new unit.
Please let me know your results and if this had assisted you.
Thanks, Tom
Per my Chilton's manual tehe bolts should be (cold engine) 65 to 72 FT. Pnds., the cam shaft bearing bolts should be 8x25 = 15 - 19 Ft pnds and the 8x65 should be 14 - 15 Ft Pnds.
The sequence is as follows for the (10 ) head bolts:
itz probly electric located in the gas tank like most new cars now u need to get a haynes or clymer manual that shows step by step-even then it takes some experience-take it slow are u sure the pump is bad check the whole fuel delivery system 1st a pressure regulator could be bad or clogged lines-please use jackstands
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