Map Sensor Voltage Too High
#4
Re: Map Sensor Voltage Too High
Its partly the cam.... that's what typically raises the kPa at idle above 50kPa. Is it a lot bigger than a CC306 or is it on a 108LSA or something? That in itself might be enough to cause the problem? Then something else could be pushing it above 68kPa at idle to set the code. Tuning problem, timing problem, valve adjustment, burned valve(s), misfires. What is the idle speed?
#5
Re: Map Sensor Voltage Too High
I didn't even read the sig. A lot of people I have noticted like to overtighten the valves with will cause all kinds of problems.
My cam is on a 110 and it is around 61kPa.
My cam is on a 110 and it is around 61kPa.
#7
Re: Map Sensor Voltage Too High
You need to PM who made the cam (Bret) and he can tell you what those cams kind of KPa readings those cams usually make at idle. He designed the cam, he knows best.
#8
Re: Map Sensor Voltage Too High
Originally Posted by Injuneer
Its partly the cam.... that's what typically raises the kPa at idle above 50kPa. Is it a lot bigger than a CC306 or is it on a 108LSA or something? That in itself might be enough to cause the problem? Then something else could be pushing it above 68kPa at idle to set the code. Tuning problem, timing problem, valve adjustment, burned valve(s), misfires. What is the idle speed?
at first i tried install just the new rockers, ran it and the map was fine but i had high knocks, pulled it apart to find a bad lifter, once i replaced the lifters, pushrods ect i had the high map....
#9
Re: Map Sensor Voltage Too High
What are you IAC counts? If they are too low (not around 30-40) that can cause a loss of vacuum. If this is the case, adjust the throttle stop screw to allow the blades to close down a little bit. What kind of timing are you running at idle? If you have the means to change this, try adding some timing. That's as long as all of the other angles have been covered (ie valve adjustment, leaks, IAC counts, etc.)
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