SummitCrazy
Member
I ride an o5 Summit X 1000 and as most everybody here knows they have problems with sucking in the belt dust. I recently pulled the throttle body and reeds to do some inspection and cleaning and thought to flush the bottom end in an attempt to remove any crud without actually pulling the engine and splitting the case. The sled had 1700 miles of sucking dust before changing to the Timbersled clean air intake kit and the amount of crud built up on the reeds and throttle body was sickening but I never thought of flushing the crank until know. Ok, so with the belt off, plugs removed, reeds out I used a large syringe (the kind for measuring oil for mix) with rubber tubing attached to the end. I put three syringe full into each side of case and just started spinning the crank around, back and forth, swish swash like a washing machine and using a floor jack to tip the machine to both sides and then used the syringe to remove the fuel. YIKES!!! Now this sled, being SDI fuel injected does not get fuel entering in through the reeds to perhaps dilute some of the crud that enters in via the stock air box setup, but I had no idea how much was living down in that expensive crank area!! I put the crud in a white ice cream pale so I could see it after the fuel evaporated. The fuel came out as black as black gets, and not just from washing out some oil. Large granules the size of ground pepper could be seen mixed with what looked like fine black beach sand. Ok i am just trying to paint a picture here...
I repeated this two more times and the fuel was almost clear on the last try. I jumped in the truck, went to WalMart (it was late) and bought some engine flush and repeated one more time and then washed it again with fuel to clean out the detergent. It came out clean as clean gets. Now this crud is most certainly attributing to early crank and or bearing failures especially on fuel injected motors. Don't know if this is gonna prolong its life any or if a regular crank case flush would help on carbureted motors but as many DOO Rev's have the same type of air box design I wonder how many failures could be attributed to this?
Any body else ever try this or have any thoughts??? Cheers
I repeated this two more times and the fuel was almost clear on the last try. I jumped in the truck, went to WalMart (it was late) and bought some engine flush and repeated one more time and then washed it again with fuel to clean out the detergent. It came out clean as clean gets. Now this crud is most certainly attributing to early crank and or bearing failures especially on fuel injected motors. Don't know if this is gonna prolong its life any or if a regular crank case flush would help on carbureted motors but as many DOO Rev's have the same type of air box design I wonder how many failures could be attributed to this?
Any body else ever try this or have any thoughts??? Cheers