No Boost!!

[hugo]

Hi all,

I am running in a new engine about 750 miles to go, the engine starts first time, runs as smooth as silk no smoke etc. The problem is that when I accelerate and the boost gauge goes from a minus figure to the zero but as soon as I try and push the car any further its as though there if a fuel cut defender cutting in she just wont run under any type of boost. If you drive the care very smoothly never going near boost (yes it can be done) the car drives fine. On a duel carriageway I was doing a steady 70 mph at 3k as smooth as silk, its just that you cannot put you foot down. I have looked under the bonnet for split or missing vac pipes etc. The car been fine for the first 750 miles, would boost gently to .8 bar no problem, and I was keeping the revs down to 3.5k .
Any suggestions would be greatly appreciated.

Hugo (Gen 3 1993 RX7)

[Fish]

Could be the pipe to the map sensor not being connected. Talk to whoever did the rebuild about it.

Fish

[Grizzly]

I had a simalar problem with my Turbo 2 which turned out to be the OMP pump.

But at Fish says get in contact with your Engine builder.

[hugo]

Thanks for that, its good advice.

hugo

[ds2000]

Did you get this sorted in the end?  I have bugger all boost atm

[Joeh]

could be in limp mode, draw the codes

[hugo]

it was because it kept going into limp mode as there was a problem with the oil Metering pump not always working correctly and putting the car in limp mode.
Good quality secondhand pump fitted alls good now.
Hugo

[ds2000]

Cheers, I\'ll take the car for a good blast and make sure its writing some codes, the ABS light is coming on after about 40 seconds of driving, odly it didn\'t for the MOT