Toyota hiace runs too rich, grey/black smoke, petrol engine

SOURCE: check engine light - 240 enfgine running rich

It could be a number of things but must be diagnosed via computer code check. If you are unable to do so yourself, find a reputable Volvo mechanic. It could be the air mass meter, a bad O2 sensor or something related. Mine turned out not to be the air meter but a bad ground wire going to it. Didn't find out until $400.00 later.

SOURCE: 1993 Hyundai Excel motor runs very rich fuel

sure he has an ecm installed .. its an injection based car.. probably air filter isn't that good .. also check if air intake pass is clear of any wastes

Marvin

• 85242 Answers
• Posted on Oct 06, 2008

SOURCE: 1991 chevy lumina will hardly run

DTC - 22 Throttle position sensor error (signal low), is tps connected?
DTC - 23 Intake air temp sensor error (low temp indicated) check and make sure the sensor is connected
DTC - 43 Knock sensor error, ignore this for now, will not cause rich run.
DTC - 53 System voltage too high, check reference voltage from PCM, it should be around 4.5 Volts, this could be the cause of all your problems, the computer will need to replaced almost for sure.

SOURCE: 1981 Toyota Hiace (18R) Charcoal canister leaking petrol.

This sounds overfilled to me. Liquid should not get to the canister, only vapors, look for exactly what separates and stops liquid fuel, somewhere along the vent line... Sometimes on top of fuel tank.

BUT, it sounds like you are seriously overfilling. Gas comes out of the ground cool, then heats up in your tank. Put much less fuel in gas tank.

Fuel no longer lubricates anything, so no issue with full time LPG, but starting is commonly an issue, and most designs start with gas and cross over automatically to LPG, after warmed up.

Doc

mike loshbough

• 1011 Answers
• Posted on Sep 22, 2009

SOURCE: 1985 ford f150 with 5.0 EFI running very rich

Check you coolant temp sensor ,If it is bad it will be reading{ 40 degrees below zero }and this will cause a rich condition due to the computer thinking it is that could outside, which requires more fuel .:)