Went for a test drive in another MPi last night, knowing that there was something wrong with it. I was told that it was gutless on hills and wouldn't rev properly over 2000ish. My first guess before I saw it was that there was something wrong with the stepper motor, but after seeing it, I don't think so anymore. It pulls OK in first and second, but third and fourth are completey dead. There's also a loud sucking of air noise (like when you run it without a filter). Unfortunately my time was very limited and I couldn't do an extensive test drive, or spend long under the bonnet.
When a searched last night the posts that were returned all relate to kanckered vacuum hoses. But the MPi doesn't have one, does it?
I've got a spare engine which I think works OK, so I can nick bits off it for testing purposes.
Where would the sucking noise be coming from? All I can think of is cracked TB. Although I didn't check to see if there actually was an air filter in the housing
Any suggestions anyone?
Cheers!
