Can someone explain rave valves and what they do and how they work? I have a 08 ptek (my wife's sled) ran ok but impossible to start and idled poorly and smoked like a mosquito fogger, I put it down to using coolant. Long story but it also was run out of oil once, over heated 3 times due to losing coolant. Compression was low so tore the engine down, bore looked fine so just honed and replaced pistons. base gasket and top o rings were fine so we were scratching our heads wondering where the coolant was coming from so pressure tested and turned out the heat exchanger had a small crack at the back. No wonder I never saw a leak anywhere. So ran like crap but wasn't burning coolant. Pulled rave valves off and one tab was broken off but it had still functioned fine when I did the finger test through the exhaust port. Also it has 490 jets in it when I think stock is 480.
Is a rave valve going to fix it or is there something I'm missing here?
Is a rave valve going to fix it or is there something I'm missing here?