Has anyone changed an injector sleeve in a Catterpillar 3116 engine?

There is fuel in the coolant. Has anybody had this problem, and how can I fix it? Does the injector sleeve replacement require special tools?

2000 Tacoma 3.4L V6 coil issues?

My Tacoma has been running rough for some time now after shifting gears and accelerating. As long as I get up to speed extremely slow it's not a problem but if I try to accelerate fast the truck shakes and jerks, sometimes accompanied by some backfiring. My check engine light came on and my scanner read "cylinder 2 misfire" I took it to the shop and they said it was a bad coil and a bad plug. It ran better after that but still showed same symptoms as before, which progressively got worse. Check engine light is on again and I'm getting misfires in cylinders 1 and 2 now. Should I just go ahead and replace all my coils,plugs, and wires?

My Paint on Car is Rough?

So I recently got a 2012 car. On the hood and windshield is like a overspray? It feels hard & looks like overspray. Will a buff job or wax do the trick? BTW on the back of car there's these white round faded looking spots, I waxed it & I think it helped a bit.. I think over all the car might need a professinal detail job but wanted to hear what others have to say. Thanks Guys.

Normally, no. One most cars, the wipers are driven by a single motor with a system of levers that transfer the motion to both blades simultaneously. Such a system can break down and maybe one blade stops working, but I can't imagine a fault that would make them work out of sync.

when I try to back my car up it won't move but when i hit the gas to go back it makes a grinding sound. please help?

When i put in drive its fine but when i stop the sounds back