Question about Cars & Trucks
Engine not run on motor coach for 5 years. Changed spark plugs, fuel pump, pressure regulator, cleaned injecters. Engine will crank but only fire on the # 2 and 3 piston. 4 8 3 7 2 6 1 5 front Engine started and ran when we first put the fuel pump in. Shut it down and would not start the next day. The fuel pump is running while cranking.
How come no one sees the simple anymore?
You started an engine that had 5 years to get all the oil out of block and into the pan ! That is a no no because that dry engine wears horribly when you do that and you most likely shaved the rings to a full leak down no compression level by doing that! You must take the right pre ignition steps before you fire it up. I will post those some other time or you can pm me for them.
Posted on Oct 12, 2014
Maybe needs new coils or module.
Posted on Apr 24, 2013
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Posted on Jan 02, 2017
SOURCE: 99 tacoma
Still need the codes.
Injectors can go "bad" in a couple of different ways; all they are is an electromagneticaly controlled nozzle. When the ECU "fires" the injector, it pulses a ground circuit for 4-8 milliseconds, the electromagnet powers up, the valve at the bottom of the injector opens, and the fuel shoots out, under pressure. The wire can be bad/chafed/corodded/ The electromagnet may be weak. The nozzle may be stuck. Lots of things. But, to put in an injector for a number 4 cylinder misfire (p-0304 code) would be one of the last things that I would do.
Posted on Nov 21, 2008
Are you getting spark from coil wire when cranking? If so, check the cap & rotor. If not, the most common failure is the crank sensor. If you have a 4,0, you can find it on the drivers side of the bellhousing, in line with the flywheel, just where it's annoying to work on. There is a test you can make, but I don't have the specific test values or the correct terminals to check. (you can find that info in any half decent manual.
Posted on Jan 08, 2009
Have you replaced the crank sensor? The crank sensor on top of the
trans. bell housing does control the injector pulse through the ECM.
The sensor is a common problem with the Jeeps. Sometimes the sensor stops working when the engine is hot and will start again when it cools off and sometimes it dies from oil leaking on top of it or it just dies.
Posted on Jan 21, 2009
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