[Tawz123]

Hello guys have a n43 b20 it cranks but doesn't start the cylinders flood immediately with fuel checked compression which is ok I'm getting spark, but only getting 6200 hpa on the high pressure side which is wayy too low for an direct injection system and about 5300 hpa from the lpfp which seems normal. Done a timing chain ik the timing is correct checked this about 3 or 4 times but did remove intake manifold to do so. Any help would be very appreciated, also the battery was off for a while I've the dme and cas become out of sync due to this.

[SRLA]

If you're sure you have spark and fuel you must not be getting any air.

[Tawz123]

Ye I have fuel but not enough on the high end only 6300 hpa done a compression test and I'm getting good readings SRLA. Thanks for replying tho

[Tawz123]

Should be over 150,000 hpa when cranking and ik the lpfp is pumping correctly at 5100 hpa.

[SRLA]

I'm not sure what the canking pressure is supposed to be on that engine but I think the engine should be able to start on low pressure supply alone. If you have fuel, air and spark it goes boom, ultimately that's what it comes down to, you must be missing one of those. Are you sure the spark is going off at the right time?

[Tawz123]

Well yea I'm pretty confident the timing is correct I used the proper tools to lock the cam and crank and the front vanos locking plate. If the timing was out I would have timing codes? Which I don't so ik its sparking correctly.

[Tawz123]

Did also get a CDA6 code appear which I heard is related to the ekmp module power supply for the pump it's self

[Andystobbs]

You do have to be careful with the cams as the cam locking tool will fit with cam right or 180 degrees out.
If you have low fuel pressure and loads of fuel in the engine maybe your injectors are passing.

[Tawz123]

Ye today I will disconnect the injector plugs crank the engine then pull the plugs out to check if fuel is still passing by.
Also I'll check the fuel pressure on the high side to see if this increases.

[Tawz123]

But 100% the timing is correct tdc on cylinder 1 and the crank hole lined up perfectly

[Tawz123]

Update removed connectors for the injectors plugged in my small autel scanner (unable to read my car in inpa and ista) found that the high pressure jumped from 6300hpa to 250,000hpa+. Definitely injector related also removed all plugs to check for leaks, found spark plug number 3 had a slight bit of fuel around the thread and electrode area.

[Tawz123]

Possible faulty injectors and also my lpfp is operating under specified delivery rate at 5040rpm to the required setpoint of 8181rpm could this be signs of a failing fuel pump aswell??