Fire out the exhaust on SWD9

Mtjohnso

Member
Fired up the SWD9 yesterday and it seemed to be running almost okay. Kind of sounded like 1 cyclinder was not running real smooth.
Hooked up to a trailer with my Bobcat excavator on it and headed down the hill to the neighbors. By the time I got to the bottom of the hill it was running rough and lots of white smoke out the exhaust. Made it to the neighbors a half mile away.
Finished helping the neighbor snd loaded up.
Started it on gas and it ran smoothly, switched over to diesel and it was running rough.
Headed home and pretty soon there was periodically fire out the exhaust. You could see the flames. Also engine temp got hot. Plenty of fluid in radiator. Not a lot of power at this point.
I got it home now.
So where to start?
Injectors or injector pump?
Timing on diesel side?
Bad compression?
Valves?
Head gasket?
Cracked head?
Thoughts on where to start or what has occurred on these engines in the past?
 
I'd start by checking the water level. If it is good then do a compression test on the gas side this would or should show if it blew a head gasket. If white smoke on the way home and no water in rad I'd guess a head gasket. If oil is milky I would guess a head gasket with hole in piston. or broken valve.
 
The fact that it runs smooth on gasoline is telling me that the compression might be OK. A easy compression check can be done on the gas cycle. Just pull the plugs and insert the tester. it will not give diesel compression, but you are looking for uniformity within 10% or so. Plugged, improper opening pressure, bad spray pattern can create a misfire that makes smoke when cold and fire when hot. Good luck, Jim
 
without hearing and seeing what its doing , it might be a bad injector or the pump timing way out. whats the story on this tractor for previous running? caus eif it was running good before then scratch off the timing. but injector is possible. hot engine temperature can be retarded timing. but your not giving previous running details.
 
its a diesel . the pump only will deliver so many cc's of fuel to each cyl. but as i said a bad injector not attomizing the fuel might be the culprit.
 
An injector that is breaking early or has a bad pattern will put raw fuel in the exhaust. this will be seen as white smoke when partially warmed up, or flame when warm or hot. If it is nice and steady/smooth on gas cycle, the compression is (probably) OK. A compression check can be made on the gas cycle (though not definitive of the diesel operation, it does check for differences in compression between cylinders. Don't expect even 100psi doing this. Jim
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top