KA24DET build cranks but wont run - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

OnTheChip · 10-19-2020, 11:50 AM

The FPR diaphragm leak will flood the engine quickly. Can you check the plugs to see if they are wet with fuel?

PoorMans180SX · 10-19-2020, 12:52 PM

Quote:

Originally Posted by OnTheChip

The FPR diaphragm leak will flood the engine quickly. Can you check the plugs to see if they are wet with fuel?

Yup, do that.

Also try starting it with ether, in case it's not getting enough fuel.

Give us some more information, does it pop when you crank it? Nothing? Is the fuel pump working?

SpaceKADET · 10-20-2020, 03:08 PM

The plugs weren't soaked but they were misted with fuel. I get no sort of pops or backfires which is kind of throwing me off. The new diaphragm is on order so that'll be fixed shortly but I figured I would still get some kind of backfire or something. The fuel pump is running and I am getting over 40psi of fuel pressure but it falls off very fast, due to the leaky diaphragm I assume.

10-19-2020, 11:50 AM	#1
OnTheChip Zilvia Junkie Join Date: May 2013 Location: Burgaw, NC Posts: 318 Trader Rating: (0) Feedback Score: 0 reviews	The FPR diaphragm leak will flood the engine quickly. Can you check the plugs to see if they are wet with fuel? __________________ NismotronicSA - Speed-Density Tuning for Nissans

10-20-2020, 03:08 PM	#3
SpaceKADET Join Date: Oct 2020 Location: Tampa, FL Age: 34 Posts: 21 Trader Rating: (0) Feedback Score: 0 reviews	The plugs weren't soaked but they were misted with fuel. I get no sort of pops or backfires which is kind of throwing me off. The new diaphragm is on order so that'll be fixed shortly but I figured I would still get some kind of backfire or something. The fuel pump is running and I am getting over 40psi of fuel pressure but it falls off very fast, due to the leaky diaphragm I assume.