White Smoke and rough runnin

[maroon man]

My BX 2660 has started blowing whitish exhaust smoke and running rough intermittently....installed new air filter, drained and replaced all old fuel and did all the trouble shooting procedures recommended. Ran fine for a while then started doing it again... any suggestions

 

[CountryBumkin]

Any loss of coolant?

 

[maroon man]

No Sir, temp seems to be running a bit high but its been real hot here in Texas. reservoir says its at recommended level.

 

[Tooljunkie]

Check resevoir cold, make a mark at leve with a sharpie. Run as you normally would and recheck when cold.
Other possibilities-
Bad injector or low compression.

 

[North Idaho Wolfman]

I would run some fuel treatment, Stanadyne, through it.

 

[1970cs]

I am with NIW, with no coolant drop and white/greyish smoke and stumbling I would suspect a fuel issue.

Carry a wrench with you and when it's start to stumble, break each injector line open one at a time and see which one does not drop any RPM.

Pat

 

[Smagner234]

I had a white smoke issue as well and it turned out to be the injectors. I had the injectors rebuilt and the injector pump and it went away, granted my engine was a bit older than yours but injectors do go bad. White smoke is unburnt fuel, you could check the temperature of the cylinders on the exhaust manifold with a pyrometer. If your temperature variation is greater than 40 degrees F then there is a fuel delivery problem or worse a compression issue. I learned this from a diesel mechanic I was talking with when I was trouble shooting my white smoke issue. Hope this helps and good luck!

 

[Tooljunkie]

After startup (cold) you can feel the exhaust manifold as it warms up, the non firing cylinder will be cooler or the running cylinder will warm up manifold faster.

 

[D2Cat]

If you've got one of these gizzmos you can point and shoot and determine which cylinder is not firing. And it has a thousand other uses.

https://www.amazon.com/Etekcity-Las...8-2-spons&keywords=infrared+thermometer&psc=1