Blue Puff

[Andrew Bandarovich 39]

I have machines that do that with 2000 hours on them and the ones with 5 hours on them. When you squeeze trigger burner shoots a size able puff of blue really nasty smelling smoke and then burns clean. Every time you trigger it. Then when you drive after you can smell that nasty stuff in the van because machine still gives off that. My burner are direct vented through the roofs outside. What's going on here? Leaky solenoid a on old machines? What about new one?

[Alexy 85]

I know blue smoke on a diesel truck is poor ignition of the fuel. Look at the fuel soleniod, fuel filter and the pump. Sounds like the soleniod since there is some fuel just sitting there at start up so it might be leaking.

[Andrew Bandarovich 39]

Connect psi gauge and see if it drops to zero when trigger is released, right?

[Russ Johnson 141]

I'd say the burner on the new one isn't adjusted properly, and the older one probably is in need of a tune up.

[Andrew Bandarovich 39]

Today after I was done with the job I shut down the new machine and was rolling up hoses and stuff. 10 minutes later I notices smoke faintly coming out of the burner stack with machine off. Checked the inside and had blue smelly smoke coming out of the coil wrap. Poured water bottle down the stack. Took out nozzle assembly. Haven't seen one like that. Looked ok but was soaked in diesel. Stuck my hand up into burner hole on the bottom to make sure insulation wasn't in the way. It wasn't but it was soaked. Nozzle is huge too 3.25 80b. All my other units have 2.25 80b. For some reason not pall of the fuel ignites. Was pretty scary.

[Andrew Bandarovich 39]

Put new nozzle in and remembered Jerry from Sirocco saying to me: "burner vents need to be open just enough to support clean burn, too much air is bad for the spark" so closed them by 1/2 inch. Seems to be burning clean so far! Thanks everyone.

[Andrew Bandarovich 39]

Anyone has experience with gx630 mufflers? My new unit has gx630 with this small black muffler. My older one has gx630 with bigger muffler with heat shield with holes. New unit seems to be louder.

[Russ Johnson 141]

The large one is Honda OEM. The smaller one is aftermarket, and a lot cheaper.

[Andrew Bandarovich 39]

Thank you.

[Andrew Bandarovich 39]

Russ, can you explain to me how to work air adjustment on beckett burners? With wayne it's simple - loosen bolt on air band and move counterclockwise for less air, the other way for more. Beckett has airband and air shutter with numbers thingy and I can't find it in literature what the shutter does and how they correlate. Manual says - loosen both, adjust for clean burn, tighten back up - whole lot of help!

[cleanhoods 43]

I would say as you run it have burner running and adjust until it burns clean. Most likely the setting the factory had at first would be your ideal setting. My unit i had since 99 and never touched the air adjustment. The old saying always works " If it aint broke dont fix it".

MArko

[Rapid HotClean 26]

My unit i had since 99 and never touched the air adjustment. The old saying always works " If it aint broke dont fix it".

MArko

And ain't that the truth! BTW, you've certainly gotten your money's worth!

[Andrew Bandarovich 39]

Exactly the point - adjust it while running till burns clean. So the band opens and closes air vents. What air shutter does? It's a two piece adjustment.

Wayne burner has single piece band - easy.

[cleanhoods 43]

@ Andrew:   Just a guess, the second is probably to fine tune the air flow to clear the smoke. Just a guess though.

 

 

@Rapid HotClean:   A well built machine always makes you money. Also having a owner that is mechanically incline helps a bunch too. If man built it, man can fix it. And the big thing on a commerial unit these machine love just to be run, down time really effects them.

Marko