Hi guys,



The topic is a lie. Ive had it running once or twice but now it refuses to start, Im starting to get disilusioned with the whole ordeal now after playing for 2 days with it..



Background:

The engine is a fresh rebuilt streetport, single turbo and 4x 850's still using standard FPR and PD.



The car its self will crank over and spins at around 240 RPM, stumbled very occasionaly but refuses to start. I've checked spark on all 4 plugs and its there. Checked for fuel in the housings while doing the spark plug check and it's there too, its plain to see on the plugs! Also checked the compression with the poor mans test got a consistant barrage of chuffs all sounding equal.



I've got Compression, I've got Fuel, Ive got Spark. To me thats everything it should have to make the car fire! - i've also tried putting some oil into the rotor to artificialy raise the compression incase its down and had no joy. Im getting stuck for ideas now.



Cheers

Leon

 

sounds like its flooded. push start it

 

What ecu are you running and is it configured correctly for the 850cc primaries?

 

I'm using an AEM unit. I'm 80% sure its configured right. It may just be over fueling to hell! but i'd expect it to have more go than it does. I'll try de flood it again tonight

 

Check to make sure that the crank angle (E-Shaft) sensors are working and properly installed. They tend to crack over time and pull away from their pulley causing the car to crank all day, but not start.



Good Luck-

 

Do the de-flooding procedure, change plugs and see what you get. Besides the crank-angle sensors, the only other easy thing I can think of is to make sure your ignitor has a good ground...it grounds though the mounting bolts.

 

Cheers guys!



I'm going to try fire it again tonight *Crosses everything on body* I should also have a compression gauge so I can quantify the compression. Sadly its boinger gauge but i'll remove the valve, take it im looking for between 80 - 100 PSI per face with little variance?

 

On a fresh engine build, you should be high 90s at least, I would think and basically even on all 6 faces. I wouldn't even want to see the 10% permissible variance on a new build.

 

Not got the compression gauge today. Stupid thing was I went to pick something up from the depot and they tried to deliver to me at the same time! Anyway, The motor now runs for a glorious 2 seconds, Fires up then cuts out. This was driving me up the wall adding more/less fuel/ignition made no odds until I noticed it once again stopped trying to fire at all! Stuck my head under the bonnet and with the aid of a friend checked to see if i could hear the fuel prime.. NOPE! Stuck my head in the tank next and all I get is a click click. I may have been sold a duff Fuel pump

 

Still sounds like it could be deflooding needed especially if it took a lot of cranking and ran rough for those 2 seconds. Once it starts you have to feather the throttle to keep it going. Takes a while to get it running smoothly.



As for the fuel pump, if you had been trying to start it or even had the key on previously and then within a few minutes or so turned on key again and listened for the pump the system would likely still be pressurized and you might hear only a tick or two from the pump or maybe nothing at all if the system fuel pressure had not dropped off any yet.