E16se bogging down / spluttering

[rich a]

Hi guys I had the engine rebuilt an it starts an runs. However when I drive it if I change gear / slow for a junction, then push the accelerator to go again it bogs down bordering on stalling. Admittedly it?s worse when cold but still does it when warm ( not as much ). I put a new fuel pump on it it?s an APS one from eBay listed for Gsi. Could it be the pump it?s man enough ? Not sure it?s related but it always started first time on the key, now it?s always second time. It?s like it hasn?t got enough fuel to start first time. S as my ideas fellas

[torquey]

Checked the fuel filter? Also vac pipes ect. Afm pipe are known to split causing problems. Cts sensor can cause problems like this ! Go round checking everything!

[rich a]

I’d comfortably rule out the fuel filter an cts as they are both new. I’m pretty confident when I checked the afm pipe before I put it back together it wasn’t split. The one thing I am questioning is the fuel pump. The old genuine Bosch one was ceased so I replaced it. The new one is an aps one off eBay it states it’s a direct replacement for a Gsi but I’m questioning if it’s up to the job. Not sure if it’s a coincidence but it always used to start first turn of the key. Now first turn it cranks over an almost runs but then dies. Second turn fires up every time

[torquey]

Fuel pump relay could be on its way out. Have you got a spare. ?

[rich a]

Fuel pump relay is brand new bud. It’s a proper mystery. Would over fuelling have the same effect, making it cough an splutter ?

[torquey]

Yes. I would check the flap inside the afm they can stick causing dodgy running. Check vac pipes also is the cts sensor a genuine bosch one? The cheap chappy euro car parts ones are not worth it.

[NovalutionGSi]

Hadn't seen this Rich and not mentioned it. Lol.

Did you try my AFM when you had it and my airbox?

Sent from my SM-G980F using Tapatalk

[bazil]

I can’t remember if you can check the pressure in the fuel rain on these, if there’s a schrader valve on the fuel rail.

does the pump prime when you put the ignition on? It should.

[torquey]

No valve on the rail on the e16se.

[bazil]

No valve on the rail on the e16se.
Ah bugger

[rich a]

Yep the pump primes, but it won’t fire on the first turn of the key, always on the second. The only way I can describe it is like driving an old car with manual choke. You know how they sometimes wanna die at a junction ? Or when you e just changed gear an your back on the gas but the engine is just not having it