ROUGH IDLING....ONLY WHEN COLD

[SUBARUIST]

Fellas,have a B2500 WL non turbo,when the engine starts up in the morning i'm getting a rough idle with some white/blue smoke,more on the white side though, untill it warms up............

checked the glow plugs and they are all good,
used a treatment,direct feed in the pump,
new filters,

and the problem is still there...................

any suggestions?

[nick009]

injectors maybe?

[bigchief3679]

Is there one of the little mesh filters on the fuel inlet of the pump? It may likely be clogged and need cleaning, simple thing to check....while getting the rough idle, pump the primer to see if idle improves.

[SUBARUIST]

changed the injectors with a known properly functioning set.............

cleaned the pump filter...........

and the problem still existed............

on the other hand the vehicle was hardly ever used for the past year,now that it's running everyday the problems seems to be correcting itself !

[speedaholic]

check your oil levels... what oil do u currently use in the engine?

[4g63]

when last you topped up your radiator water? not coolant, i mean in the radiator itself?
how is the temperature on the temp gauge? have you ever found your ac isn't cooling properly?

you could have a cracked head on your hands. you can have a pressure test done to know.

[SUBARUIST]

when last you topped up your radiator water? not coolant, i mean in the radiator itself?
how is the temperature on the temp gauge? have you ever found your ac isn't cooling properly?

you could have a cracked head on your hands. you can have a pressure test done to know.


water good,neverhad to top up,guage almost never goes pset the quarter mark,ac cooling 100%

using valvoline oil......

[Mech Mines]

coolant temp sensor....keeps the glow plugs running for 10 min until chamber heats up.

[SUBARUIST]

coolant temp sensor....keeps the glow plugs running for 10 min until chamber heats up.

r u saying that the glow plugs are supposed to remain on for 10 mins.......
and if it doesn't this is what is causing the problem ?

[SUBARUIST]

coolant temp sensor....keeps the glow plugs running for 10 min until chamber heats up.

Problem completely solved...........

changed the sensor..........thanks Mech Mines