Areas of concern that have caused this code to set are as follows:
- Leaking air horn between the mass air flow sensor and the injection holder
( quantity 2 ). Loose bolts found.
Air leak.
- Failed air temperature sensor ( integral part of the mass air flow sensor assembly) (
quantity 4 ).
- Air temperature sensor read -45 degree C. when actual air temperature was 30 to 36
degree C..
This is an open in the Air temperature sensor circuit.
- Leaking cup seal between the injection holder and the throttlebody.
Seal was cut or folded. ( quantity 11 ).
Air Leak.
- Blocked filter in the injection holder. Fuel restriction
Leaking Main injector O-ring or seal ( quantity 2 ).
O-ring was cut and seal was cut.
Air leak.
- Cracked intake manifold. Cracks on either side of the outer intake runner close to the center
where the injection holder and throttlebody mounts ( quantity 2 ).
Suspect cracked by backfiring.
- Air Leaks and loss of fuel delivery to the cylinders.
- Air cleaner restriction. By dirt. The dirt got wet and became mud like ( quantity 1 ).
Restricted air flow.
- Vaporizer leaking internally. Fuel pressure is too high ( quantity 8 ).
Irregular air fuel ratio.
- Air fuel ratio. Fuel pressure is too low. Fuel lock plunger is stuck shut, vaporizer
malfunction, Filter screen blocked, open check valve
- Leaking injection holder check valve. Stuck valve.
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