Cylinder 3 misfire

Jeepmedic46

NAXJA Forum User

NAXJA Member

Location

Orange, Ma

• Apr 10, 2021

• #1

My check engine light came on. Reading the code for cylinder 3 misfire. This happened not to long ago. I replaced the coil pack and spark plugs. Injectors are working ok. Valve cover gasket was done as well. Is there anything else I should look at before I recheck all of the above?

 

S

SleeperXJ

NAXJA Forum User

Location

Valencia, CA

• Apr 10, 2021

• #2

I had an injector clog after I replaced the fuel pump.
With the engine running, I used a stethoscope to hear the injector didn't sound like the others when it fired.
I cleaned the injector and replaced all the injector electrical connectors, that fixed my issue.

 

Jeepmedic46

NAXJA Forum User

NAXJA Member

Location

Orange, Ma

• Apr 11, 2021

• #3

I’ll check that out thank you.

 

Jeepmedic46

NAXJA Forum User

NAXJA Member

Location

Orange, Ma

• Apr 21, 2021

• #4

Found 2 cracked injectors. Cylinder 1&3. Check engine light came right back on. Not seeing any cracks in the head.

 

S

SleeperXJ

NAXJA Forum User

Location

Valencia, CA

• Apr 21, 2021

• #5

Sounds like it's time to do an upgrade to 4 hole Bosch injectors.
This thread seems to run down several options:
https://www.naxja.org/forum/showthread.php?t=1161078&highlight=bosch+injectors

 

C

cruiser54

NAXJA Forum User

Location

Prescott, Az

• Apr 24, 2021

• #6

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