Hi all was getting my car tuned on the road today when it died all of a sudden, the car is single turbo Borg Warner s366 apexi pfc 1680 secondaries standard primaries. Large street port.

Now the problem occurred when we were doing a second gear run, no boost about 1 quarter to a third throttle. The car revved up to 6500 rpm and the mapper told me to lift off. As soon as I lifted the gas the car felt like someone has put the breaks on. I out the clutch down and the revs went straight to 0 and the car died. On the side of the motorway! It wouldn't restart, it was getting spark. And fuel. Fuel pump was running and getting power. Just wouldn't restart almost sounded like it was trying to but wouldn't fire. Luckily a fc owner in a van gave me a tow and we tried bump starting it which worked instantly.

Now I drove it home fine no issues, pulled on my drive and turned it off, went to restart and it wouldn't fire again! Left it 2 mins and tried again.

It's smoking blue especially at idle and not on any boost. I think I need to fit a turbo oil feel restrictor

Anyone had this or anything similar before?

 

If the car runs otherwise fine after pull starting, but just doesn't start up on it's own, you need to go back to the tuner and have him add more fuel to the map around cranking and atmosperhic low RPM. Sounds like the map was just leaned out to all hell. Common mistake for beginning tuners.

That's assuming no mechanical problem, like a clogged fuel system.

 

Thanks for the input. I do trust the mapper and he is well recommended by everyone in the UK rx7 community. I have had a look at the engine and I can see just below the lower inlet manifold looks to be leaking slightly down the irons. Could this be sucking extra air if the gasket is crap?

 

It could be. But that won't have much of an effect on a speed density system, so likely not the issue.