Question about 2004 Mitsubishi Endeavor
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Posted on Jan 02, 2017
Most FI systems have a pressure relief valve on the fuel rail (a pipe parallel to the engine block) that supplies fuel to the injectors.
It will probably look a lot like a tire valve but a little larger.
After the engine has cranked for a few seconds, pressing the center of this fitting should produce a squirt of gasoline.
If it does, the problem is elsewhere and after the spilled fuel has evaporated, I would start by pulling a plug wire and letting it arc to the block.
If it produces a healthy spark, you aren't finished with the diagnosis.
I just hope this engine is not an interference type and a timing belt is broken; this would be an expensive failure since engine damage is certain.
Posted on May 17, 2009
probably the most common problem, just had the same issue on my 1995 RS. Check the Crank sensor first, mine was located on the back of the block just above the oil filter housing. The other possibility is the Cam sensor, located on the right side end of the valve cover. If either one of these are bad, it will not send a signal to the computer to run the coils or the fuel pump.
Posted on Oct 20, 2009
MPI CONTROL RELAY AND FUEL PUMP
You need to be certain the fault is due to the Fuel Pump Relay. Your vehicle's PCM will have stored the appropriate fault codes which are causing your problem. If you haven't already, have your codes read to confirm your fault.
The Fuel Pump Relay is actually hidden underneath the plastic 'centre' console (where the gear lever and ashtray are).
These are photos of locations, with the centre console/ashtray removed:
RELAY CONTINUITY CHECK
UNDO THE RELAY CONNECTOR
1) Without Battery Voltage: check continuity between connector terminals 2 & 4
2) With Battery Voltage: connect 12v battery power to connector terminals 2 (-) & 4 (+) . Then, check continuity between connector terminals 1 & 3. Refer to diagram below:
If the relay connector does not measure the correct continuity, then replace the relay.
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MPI CONTROL RELAY AND FUEL PUMP
Posted on Jun 11, 2011
Fuel pumps are not a regular maintenance item that needs to be changed at a certain time. Replace it only when it fails. The designers built that fuel filter into the tank with the reasoning that it will last as long as the fuel pump itself.
Posted on Jul 05, 2011
never replace parts till u kno the solution--it cud be a fuel pressure regulator or bad filter------or it may be bad ignition wires or module----get car scanned 1st then test for fuel pressure and spark
Posted on Oct 19, 2011
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