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Cranks but no start...any advice?

6K views 6 replies 3 participants last post by  MartinZ 
#1 ·
I have an NA 2003 6MT with 147k miles on it.
There are zero codes to pull, although ECM connection is okay with OBDII scanner.
I did see the CEL come on a few times in the last few months, but every time I checked it, the ECM had no faults stored, and went away not long after.

Mods that may matter

JWT popcharger
Invidia Gemini
Berk HFC
Uprev Tuned

A few weeks ago, the car become hesitant to take gas up a hill and I struggled to get it make any power. Luckily, I was very close to home and able to drift it in my driveway as the car finally died. I had someone spray a tiny bit of ether into the TB while I cranked it. It wanted to start, so I assumed replace fuel pump go from there. I ordered a new Precice brand fuel pump and while I waited, disassembled and cleaned the TB, as well as the intake cone filter.
New pump arrived, I changed it out, car started right away. Hurray! problem fixed right?

Fast-forward one week, pretty much the exact same thing happened to me coming home from work. Felt like I redlined on WOT 5k, It ran for a few miles longer very poorly and throttle response got worse and worse until it shut off altogether.
I turned it back on, it ran for another half mile, and died again. Started it back up a third time, got about 100 feet. Kept getting a little further but eventually it would not start at all. Car was towed back home after this.

I thought, since the car responded so well to a new fuel pump the first time, and what I bought was not Hitachi OEM, I started the return process and on my replacement and decided to order a new OEM.
Second fuel pump arrives, I install it in the car, and this time it didn't change anything. The pump primes, but it will just crank forever and only try to start with the help of a little bit of ether.

Next step is to tear down to the fuel rails, but I will need to buy an adapter to fit it for a pressure test correct?
Any ideas guys? I am somewhat handy but not the worlds greatest mechanic either. I really don't want to take it to the stealership....
 
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#2 ·
Read this thread on the other Z site, and agree that you've been throwing parts at it. But one line got my attention in your post that needs some clarification: "Fast-forward one week, pretty much the exact same thing happened to me coming home from work. Felt like I redlined on WOT 5k, It ran for a few miles longer very poorly and throttle response got worse and worse until it shut off altogether."

Does this mean you overrevved the VQ somehow? Missed shift? Please clarify.
 
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