Question about Toyota Cars & Trucks
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Posted on Jan 02, 2017
These International engines can be difficult to diagnose without the proper tools; namely Ford's I.D.S., or Navistar's DLC.
As for the o-ring the dealer was hinting at, they may have meant the o-ring on the fuel injection pressure regulator. I have witnessed these leak and cause difficult or no starting. This component is located at the rear of the engine below the turbo exhaust supply tubes. A specialty socket is needed to replace it (35mm 12 point socket which resembles an O2 sensor socket), although replacement is most likely unnecessary considering that your vehicle does eventually start. If this were indeed the culprit, your engine would not start. There is a test port next to this regulator to test oil pressure (bolt with allen head relief). A high pressure gauge which reads greater than 5,000 psi is necessary to test at this port. When your engine doesn't start, try checking what the oil pressure is at this port. A minimum of 3,000 psi is needed for the engine to start and 5,000 psi is prefered
Other sources of this problem could be the intake air temperature sensor, oil temperature sensor, or wiring compromises. It's a shame the dealer didn't want to spend the time necessary to pinpoint your problem. So glad I'm out of that crooked industry.
Posted on Dec 01, 2009
If coil is good and plugs are not - there's your problem. You can't have output of coil be good and plugs not work right. Something inbetween is wrong.
Posted on Dec 17, 2009
Check your oil pressure sensor located where the oil filter attaches,You might also want to check to see if it has a crank positioning sensor.
Posted on Dec 26, 2009
sorry but you have a timing problem,recheck the fireing order because that what is causing the backfire through the exhaust i think you are nearly there stop useing ether it will blow the head of the engine or blow a piston out through the engine take another good look at the timing have you set the module 360% the wrong way.adrian,,,,,,
Posted on Aug 11, 2010
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