AE.28 PRO Started/Ran Great , Not So Much Now... Ideas?

[tmaxxfreek]

could the bearings be wore out causing a bad enough leak to keep it from running?

 

[HPIguy]

^^That could be very likely

Also, I've never been a fan of those primer bulbs, whether on the tank or inline, they always seemed to be a source of issues. I just use put a finger over the stinger for a couple pulls (spins if roto start equipped) till I see fuel reach the carb. Air leaks can be the biggest PITA in all of nitro IMO.

 

[Phins Fan]

It's the 2nd primerbulb the truck has had and has seen A fair share of fuel. It's cheap enough to replace/eliminate so why not try it out?

 

[HPI-Killer]

Hell of an idea but I only have enough length if the nipple on the carb faced towards it.

Time to read up on carb rebuilds as well so I can check that off the list. Time to reseal the carb and face the nipple towards my tank.

 

[andydrew39219]

Correct me if I'm wrong but I always thought if you were going from 20% to 30% you would need to add another gasket or 2 to the head. Air could be leaking through the head. Maybe thats what you heard when it stalled out?

Not sure though, I don't have near the amount of experience that a lot of people do on this site. But I'm slowly learning.

 

[HPI-Killer]

Ran good and I can swear it made a slight pressure release (pfff) sound exactly as she died. Was a quick sound too, dont remember other nitros killing like that.

What signs show bad bearings inside the mill? Guess ill have to tear my fresh sealed milled open again.... Unless I dont have to..

Also did a straigh fuel line instead of the primer bulb setup, still didnt show interest in starting...

I have faith I can fix it, if I do I will know a lot more about nitro engines. Lol

 

[Phins Fan]

I would think a bad bearing would have caused a blown engine as it would have sent fragments throughout the internals and cause a detonation. The fact you have compression makes me think otherwise. Have you tried a different ignighter? It may sound stupid but I've had them go bad before as well

 

[HPI-Killer]

I dont think its my ignitor, it makes about 98% of the plug coil light up as ot should.

Is the entire coil in the plug supposed to glow?

 

[Phins Fan]

No if u have 98% u r All set

 

[tmaxxfreek]

I would think a bad bearing would have caused a blown engine as it would have sent fragments throughout the internals and cause a detonation. The fact you have compression makes me think otherwise. Have you tried a different ignighter? It may sound stupid but I've had them go bad before as well

bearings can wear out without coming apart, it will cause an air leak.