2005 m7 dead top end

[hardy]

hey i was just wondering if any buddy had a answer to my problem? I have a 05 m7 and my top end has a really bad bog for a few seconds than it seems to clean it self up and will take off to around the 8000 R's area the bog usaully starts around the 6500 range when i put it down? any ideas would be great.. thanks

 

[dooryder]

hows ur clutch?

 

[hardy]

everything is working well in the clutches my buddy has a boondocker box i'm going to try tommorow and lean that top end out a bit to see if that cleares it up gotta start somewhere..

 

[twin turbo]

hey i was just wondering if any buddy had a answer to my problem? I have a 05 m7 and my top end has a really bad bog for a few seconds than it seems to clean it self up and will take off to around the 8000 R's area the bog usaully starts around the 6500 range when i put it down? any ideas would be great.. thanks

That sure sound's like the mid range is loading up...
Possibilities, Clutching,and or clutch-secondary not shifting properly, mids too fat,fuel pump, if you got an electrical one on there.....
I dont think i would be touching the top end just yet,ya could melt a piston quick...

 

[glengine]

Has it always had this problem or ahs it started in the last while? I would recommend that you put a digatron on before you start messing around to much in leaning out the top end... Clutching could be a possibilty to. But i do know that the cm's are notorious for being rich in area's.. But definitely be cautious when leaning it out, READ YOUR PLUGS PROPERLY if you don't have a digitron ..

 

[Deano670]

I would check to ensure the tops of your spark lugs are tight and the end boots are in good shape. If your not getting enough spark at wide open throttle it will NEVER burn all the fuel in the cyl.
My two cents

 

[Bryan m]

hey i was just wondering if any buddy had a answer to my problem? I have a 05 m7 and my top end has a really bad bog for a few seconds than it seems to clean it self up and will take off to around the 8000 R's area the bog usaully starts around the 6500 range when i put it down? any ideas would be great.. thanks

drop ur neddles down 1click, ur top end is combining with your bottomend to early!or your secondary shives need to be slacked off!

 

[glengine]

drop ur neddles down 1click, ur top end is combining with your bottomend to early!or your secondary shives need to be slacked off!

Quick question.. How do oyu drop the needles on an EFI sled???? Boondocker control boxes only work on EFI's.. the needles dont affect topend. there biggest area of affect is midrange, and how it transitions thru the rpm range.. That is why there are different tapers... But you should be able to go onto boondockers website and get some base settings from them for that sled.

 

[live2ride]

Did you get this fixed? What did you find out? Is the bog all the time when you can it or just sometimes? Are you flashing codes?

I have a 06 doo, that had similar problems but only at times (several each ride) BUT I think we have my problem fixed, We went through all the wiring, clutching, fuel even checked compression. Either we tightened something that was loose at the DPM/electrical or it was water in the fuel added heat.......

 

[hardy]

no i have still not fixed my problem. It only happens a couple times each ride and i noticed if i slowly accelerate to my top end it does not do it just when i put it right down. but i have tacken both clutches apart and cleaned them put a shift assist in the secondary,changed plugs, cut back spark plug wires, when through most electrical, cleaned hose going into computer it was a little dirty and cleaned the power valves and was thinking of cleaning the injectors but not sure the best way to do it.

 

[live2ride]

Try heet in the red bottle, also are your power valve cables the same length at the servo motor, is it in powder or not getting enough air, do you have a big mouth kit on the front?

 

[hardy]

hey i got all factory air intake on it no it doesnt even have to be in the powder.

 

[live2ride]

hey i got all factory air intake on it no it doesnt even have to be in the powder.

Did you ever see if it was flashing codes? I would suggest trying the heet, if you made sure all your connections are tight and your clutching is good.

 

[hardy]

hey no never had any codes flash for me yet. where do you get that stuff heet??

 

[glengine]

The codes will flash on your gauge on your hood.. Has it ever backfired?

 

[live2ride]

hey no never had any codes flash for me yet. where do you get that stuff heet??

Any automotive store, not that it will fix the problem, but I had the same kinda prob's w/ my sled this year, checked all the same you did, put the isopropel (sp) (HEET) in a RED bottle, no problems since. Watch for codes, flashing lights in your gauges, if they blink, COUNT how many times it flashes and the pauses inbetween flashes, then look in your manual.

 

[hardy]

never had any codes flash,never backfired for me,just dont understand???

 

[Deano670]

May seem like a foolish thing to say do to the fact it doesnt do it all the time but have you pulled your throttle bodies and checked your reeds????

 

[rknight111]

May seem like a foolish thing to say do to the fact it doesnt do it all the time but have you pulled your throttle bodies and checked your reeds????

I agree with Deano670, I had a similar issue on my doo and the culprit was the reeds were shot.

 

[glengine]

I thought about the reeds, but if the reeds were shot it should mbackfire thru the throttle bodies occasionaly. I was also wondering about if there was any water in his fuel by chance.. Thats where the isopropynol alcohol might be a thing to try.. To get the throttle bodies offf to check the reeds isnt the easiest job on them, they can be a bit of a pain. But a guy just might have to do that.. I know that Vforce reeds are only like 299.