Join Date: Dec 2003
Location: Spotsylvania, VA, USA
Airbox - Throttle Body Seal
Wow, this morning I stripped down the Wildebeast to clean and re-oil my air filter, change oil & filter, get ready for the warm months. I pulled out the air filter and proceeded to do an inspection of the airbox. Holy cow I about shit!! I saw daylight coming through the bottom of the airbox. The rear two rubber connections from the throttle bodies had been pulled out, 1/4 inch or so. About 5K miles ago the clutch was changed, engine lowered, I guess the shop did not look at the airbox real close when putting it back together. Damn I was wondering why my oil was getting darker so fast. I guess I am lucky for running synthetic oil, it can handle dirt far better than dino-oil.
So I pulled everything out, throttle body assembly, fuel rail, airbox. What a mess down there. I can not believe the factory put two spring type clamps and two screw type clamps that hold the rubber down tubes to the top of the throttle bodies. WTF why not use all the same?
I de-greased everything, put new o-rings on both sides of all injectors, and two screw type clamps to replace the spring ones. Re-assembled, made sure the down tubes are fitted properly to airbox, injectors feel tighter with new o-rings, all electrical connectors now have waterproof dielectric grease, more wiring zipp ties to make eveything neater.
No Daylight in airbox now!!! Throttle moves freely, very important after messing around with all that. 10am to 6pm, two trips to the shop for parts and look at another k12 that was disassembled. Dang hope I do not have to do that again soon.
But wait, what about larger throttle bodies, high performance injectors, fuel rail and performance fuel regulator? Another 50hp?