Injectors!!!???

[RidnHigh]

2009 BoonDocker Pump Gasser Dragon - Anybody had an issue with there injectors going out?? What were the symptoms or problem you noticed, im pretty much down to this and a few other options now so any input would help thank you tons.

Things Already Checked

• Throttle Body Boots are Good
• Reeds are Cleaned, Checked, and Good
• Pistons and Head is Great
• Wash on Pistons Looks Great
• Rings Look Great
• Exhaust Valves Cleaned and New Gaskets Installed
• Pipe is Good, No Breaks or Cracks
• Turbo Is Good and Within Spec, All Fluids Good
• Pressurized whole System to 12 Lbs and Not even tiny leaks showing, looks nice and tight...
• Cut Back Plug Wires and Installed NGK Plug Ends

My issue, sled runs great but when its loaded and on full throttle it cuts out really bad after like 5-6 seconds and then it'll come back on...i thought i had video of the stutter but i checked and dont anymore. I am at a loss to what it could be at this point....injectors, EBC, any help please throw it out there...

 

[theshadowrider]

Has your injectors ever been replaced, by you, or was warranty work ever done that they could have been replace by your dealer before?

 

[Mag]

I'd also check the fuel pressure and change the filter, kill the sled as soon as it starts cutting out and check the plugs to see if one is really lean or wet.

When I had a broken wire going to an injector my problem was loading up in the mid range but ran great wfo.

 

[modrmk]

I've had two come into the shop this year that all we can figure is that it was bad gas and plugged the injector just long enough to burn it down.

 

[NM]

If you are running a Dobeck controller, we have seen them reset from a voltage spike or bad ground. Look at the controller and see how long it takes to go through its starting sequence when the sled starts, it just might be the same amount of time your injectors won't fire?

 

[RidnHigh]

If you are running a Dobeck controller, we have seen them reset from a voltage spike or bad ground. Look at the controller and see how long it takes to go through its starting sequence when the sled starts, it just might be the same amount of time your injectors won't fire?

Neil, I am running the BD box...but two weeks ago did have the diagnostic plug in the wiring harness down by the hood hinge rub the exhaust shield through the plastic and exposed the ground....long wnough exposure to turn the sled off, probably happened ten times before i figured it out. You think its possible i screwed my electrical??

 

[NapaMatt]

???? Too light of weights in primary??

 

[RidnHigh]

???? Too light of weights in primary??

I wish buddy, but no dice haha im running the 10-72's which is plenty of weight for here...but thanks for the try! And it used to run, just been the last few weeks haha...

 

[FTXMOTORSPORTS]

low fuel pressure due to plugged fuel filter is very common-check your 02's and fuel pressure wfo-CFI engines usually stutter or oscillate when they go lean.

Curt

 

[RidnHigh]

low fuel pressure due to plugged fuel filter is very common-check your 02's and fuel pressure wfo-CFI engines usually stutter or oscillate when they go lean.

Curt

Curt, ill give that a shot, have to hook up a fuel pressure gauge and i dont run a wideband but ill def check that out...

Thanks

 

[NM]

Neil, I am running the BD box...but two weeks ago did have the diagnostic plug in the wiring harness down by the hood hinge rub the exhaust shield through the plastic and exposed the ground....long wnough exposure to turn the sled off, probably happened ten times before i figured it out. You think its possible i screwed my electrical??

If it normally runs good, but just shuts off for a few moments, it would indicate an electrical issue.