sweden-eagle

hi all
last week i bought a 1994 Grand Cherokee 4.0.
the old owner says: only the alternator and one spark plug wire is dead.
ok, today i change the alternator and the spark plugs, rotor distributor cap and spark plug wires.
i start the engine and the volt-meter says only 12V
i open the fuse box and the 2 fuses with 60A was blown.
so i change the fuses and start again, ok, the alternator is now working.
But the engine runs only on 5 cylinders and smokes like hell and the fuel is dripping out of the exhaust.

a friend of mine says: hole in piston
i donīt think so.

i pull of the spark plug wire from the 5th cylinder is no change.
when i accelerate over 2000 rpm i think all 6 cylinders works.

and one time, the engine runs in idle, the engine shut off.
i will start again, no reaction.
i can not hear the fuel pump.
so i disconnect the batterie, wait a little, connect the batterie again, switch on ignition an the fuel pump works again and the engine starts.

can it be the crankshaft position senson or a another sensor ?
or the engine dead ?

thanks for all ideas

Bustedback

Do compression test and make sure all of the cylinders are mechanicly sound, if you have good compression it means you have either a fuel or ignition problem. What color is the smoke coming out of the exhaust?

sweden-eagle

it looks like a fog-machine white
the water in the radiator is clean.

jnicewan

It kind of sounds like an injector is stuck wide open, cyl #5? It would be pretty easy to pull the injectors and see. Does cyl #5 spark plug look wet and fuel fouled? White smoke can be caused by unburned fuel, I have seen this before. Maybe pull the injectors with fuel rail attached and turn the key to on position to see if the suspect injector is dumping fuel.

sweden-eagle

thanks man, great idea, i will check this tomorrow

"Does cyl #5 spark plug look wet and fuel fouled?" YES

jnicewan

Ok it realy sounds like #5 injector needs to be looked at. When you pull the fuel rail/injectors up to see if its stuck open, do this test with the electrical connector both plugged and un-plugged. This will tell you if its stuck mechanically or electrically.

sweden-eagle

compression test is done, full power on all 6 friends
i read in the book, the camshaft position sensor, located in the distributor.
if its posible that thing will not work correct ?

sweden-eagle

blinking trouble codes
12
55

nothing what have to do with my problem

jnicewan

[QUOTE=sweden-eagle;1276665]compression test is done, full power on all 6 friends
QUOTE]

Are you saying its running on all 6 cylinders now, or that they all have good compression? Is cyl #5 still dead? Is it still smoking, and if so do you have any idea what the smoke smells like ( oil, fuel, kind of a sweet smell) ?

sweden-eagle

no, that only will say, the compression test was ok, also cylinder 5 have full compression.
no dead engine, but the problem is still going on with the smoke and running on 5 cylinders

mrfajita

Disconnect the power to injector 5 and see if the smoke goes away. Also try pulling the fuel rail like has been suggested.

sweden-eagle

i will test this tomorrow, today i had no time

sweden-eagle

today i had no so much time.
i check all fuses, all ok.
spark plug test on all 6 ok.
when i pull of the electrical connector from injector 1-4 the engine goes down with rpmīs also on cyl 6, but no changes on cyl. 5.
electrical or mechanical fail ?

Bustedback

Use a 12 volt test light and see if you have power and ground at the #5 injector plug. I think the injectors ar switch on and off by the ground circuit in the PCM and have constant voltage when the engine is running.

sweden-eagle

ok, i donīt know why, but now comes the code
code number 27
Injector 3, and/or 4, and/or 5, and/or 6 output driver does not respond properly to the control signal.

whats going on ?