Forgive me if this is an obvious question but how could I see it when driving. I want to see what happens when I press the gas quickly.

10 minutes ago, gotham22 said:

Forgive me if this is an obvious question but how could I see it when driving. I want to see what happens when I press the gas quickly.

The redneck way is to use a long piece of hose. I took a different direction. I went a 0-30 from this brand: https://www.glowshiftdirect.com/elite-10-color-100-psi-fuel-pressure-gauge/

If you want a cheaper alternative: (Wrong part removed) https://www.ebay.com/itm/176895594944?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20200818143230%26meid%3D5a579eb1d3964f638fde15fc3eb8a2e0%26pid%3D101224%26rk%3D4%26rkt%3D5%26sd%3D176367258697%26itm%3D176895594944%26pmt%3D1%26noa%3D1%26pg%3D2332490%26algv%3DDefaultOrganicWebV9BertRefreshRankerWithCassiniEmbRecall&_trksid=p2332490.c101224.m-1

I can't vouch for the quality, though.

Edited May 6, 2025May 6 by SteveJ

The Good 'ol Boy way as was told to me by Fastwoman. Cost maybe $10? Don't drive around busy streets while watching the gauge, find a nice backroad and there won't be any issues.

49 minutes ago, siteunseen said:

The Good 'ol Boy way as was told to me by Fastwoman. Cost maybe $10? Don't drive around busy streets while watching the gauge, find a nice backroad and there won't be any issues.

I just semi-permanently installed the electric fuel pressure gauge in my car. My job (and helping the parts cannon crowd) has conditioned me to have more diagnostic info readily available.

I purchased this a few days ago. I'll start there

BETOOLL 0-140PSI Fuel Injector Injection Pump Pressure Tester Gauge Kit Car Tools (Master)

Seems unlikely that the engine would use so much fuel when accelerating that fuel pressure would drop. Probably learn what you need to know just blipping the throttle by hand with the hood open.

You could connect to the cold start valve hose. It's basically "on the rail" and sees what the injectors see. Don't forget to block the hole in the manifold. Never mind, no need to remove the valve. Just the hose. Good luck.

Edited May 6, 2025May 6 by Zed Head

Hooking up a vacuum gauge is somthing else that helps find problem. You can get them at chain stores with loaner programs for free.

I connected a fuel pressure tester between the fuel filter and the fuel rail. At idle, the pressure reads 32 psi. When I manually move the throttle, it increases to about 38 psi. However, I’m unable to replicate the issue while the car is parked — I can’t drive it out of the garage right now to test it under load. Given that I can’t reproduce the issue when not driving could this point to something other than fuel pressure. My first thought before all of this was that it was a transmission issue. But I took it to a transmission guy who said everything was fine.

Not sure of the correlation between your transmission and fuel pressure for what you’re experiencing

I don’t think there is a correlation just letting everyone know I checked the transmission and then I moved on to the fuel pressure. I am just confused that I can not recreate the issue when not driving

There is no load on the engine

Could it still be a pressure issue when there is a load on the engine?