wont rev past 5500 .. mivec point, need help, i have no idea

nathan · Post by **nathan** » Tue Oct 13, 2009 4:21 pm

ok so basically the mivec motor i have in petes gpx wont rev past 5500, the mivec change over point, when it reaches 5500 it stutters and acts like its on rev limiter

no idea, but really disappointed cause i only bought this gpx for a mivec conversion on my gr

any ideas people?
also its running really rich, and it spits water? possibly petrol? out the exhaust

changed the detonation sensor as suggested by pete

Post by **aza013** » Tue Oct 13, 2009 4:26 pm

Is it at full running temp? as it won't go into mivec if cold.

maxleng · Post by **maxleng** » Tue Oct 13, 2009 9:21 pm

was always curious, how long does it take for the engine to reach optimum temp?

Post by **Bennoz** » Tue Oct 13, 2009 9:56 pm

At least 10 minutes. And a further 10 for your gearbox oil to reach operating temp.

Post by **aza013** » Tue Oct 13, 2009 9:57 pm

Aprox five mins if driving but give it ten to be safe.

Post by **dstocks** » Tue Oct 13, 2009 10:12 pm

nathans internet has died on him. Was talking with him a few minutes ago. I cant answer the questions, but hell be calling me tomorrow probably, so if you have any ideas, flick them in here and ill realy them for him tomorrow

pete_gpx · Post by **pete_gpx** » Tue Oct 13, 2009 10:54 pm

Engine hit MIVEC when I had the car running without any issues. I'm thinking it's not warm? I was told by a mechanic that the detonation sensor was to blame for the running rich. If it's not that... I have no idea, since I replaced the O2 sensor, spark plugs, ignition leads and fuel filter.

Post by **I8A4RE** » Wed Oct 14, 2009 10:29 am

Could be alternator as well. But im tending to agree with everyone else that it probably hasnt got to engine temp yet

nathan · Post by **nathan** » Wed Oct 14, 2009 12:21 pm

public computers rule lol

hmm that would make sense cause ive never run it for more than 3 or 4 minutes
bit scared i might damage it as its spitting some? out the exhaust, when i first start it its fine but idles pretty rough, after about 30 seconds or a minute it starts to spit and idle gets a little worse ... maybe fuel pressure regulator?

would take it to a mechanic but all the ones around here dont even know what an fto is lol and the only one that is capable of working on it is a dickhead

so mivec question is answered - thanks heaps

next question - spitting fuel? water? and running rough

thanks for all the help so far

mivec thing was worryin me a bit lol