'97 Boxster no start

[seningen]

Originally Posted by eee

So I got the car to “cough” once with the starter fluid, but I couldn’t keep it alive. After that I tried push starting it again and it coughed to life, but immediately died. Opening the throttle just makes the death throes a little longer. RPMs never get over ~1200.

Sounds like it may be a fuelling issue then? Maybe the filter or pump? How would I go about testing it? I appreciate any and all thoughts

Vacuum leak?

Check your oil cap?

Any recent work around the throttle body,
If that’s loose, same symptoms.

Mike

[eee]

Borrowed a friend's multimeter to check the fuel pump fuse today, it was fine. Also checked the 12V rail for the fuel pump relay and the fuel pump resistance, both seemed fine. However, I couldn't hear the fuel pump running when the relay or a jumper where in.

I've ordered a new relay and fuel pump, and I'll see if those do the trick (in that order). If that doesn't do it, I'm thinking it's the CPS.

Originally Posted by Paul

Just for fun put some gas in the tank...Sometimes the fuel gauge lies, I've seen cars out of gas that showed 1/8 of a tank left.

I thought the same so I added an extra 2 gallons of fuel just to be sure, no change

Originally Posted by seningen

Vacuum leak?

Check your oil cap?

Any recent work around the throttle body,
If that’s loose, same symptoms.

Mike

Oil cap was fine. Genuinely curious: how would a loose cap cause such a drastic fault? Didn't notice any signs of a vacuum leak and the throttle body seemed fine. Thanks for your suggestions.

[DoninDel]

Originally Posted by eee

Borrowed a friend's multimeter to check the fuel pump fuse today, it was fine. Also checked the 12V rail for the fuel pump relay and the fuel pump resistance, both seemed fine. However, I couldn't hear the fuel pump running when the relay or a jumper where in.

I've ordered a new relay and fuel pump, and I'll see if those do the trick (in that order). If that doesn't do it, I'm thinking it's the CPS.

Why CPS? I don't think you would've gotten spray start to fire with a bad CPS.
Sounds like fuel pump to me (you said you tried jumping relay with paper clip).
We'll see....

[eee]

Just replaced the fuel pump and the fuel pump relay, no change . The car still has the same symptoms.

Here's a video of the attempted start after replacing the pump: https://streamable.com/hg4ky

I'm going to over my work for the third time tomorrow and make sure I didn't miss any connections. One thing I'll double check is the orientation of the inlet and return lines on the sender unit, I may have mixed those up as there's no indicator.

Edit: I did mix up the inlet and return lines from the pump to the sender unit. Fixed the orientation, double checked everything and buttoned it back up. Still no dice.

[eee]

Ended up being the fuel pump after all. The cheapie that I swapped in seemed to be DOA (or maybe my line reversal toasted it). Got it replaced with an OEM part and the car is fine now. Thank you to everyone who helped out

[DoninDel]

Originally Posted by eee

Ended up being the fuel pump after all. The cheapie that I swapped in seemed to be DOA (or maybe my line reversal toasted it). Got it replaced with an OEM part and the car is fine now. Thank you to everyone who helped out

Thank you for posting the resolution - it is how I learn.

Glad you are back in business...