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  #21  
Old 06-23-2020, 07:52 PM
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Quote:
Originally Posted by Mike1261 View Post
I finally got a fuel pressure test gauge that works!

Funny you should say that my first one just leaked gas into the gauge.
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  #22  
Old 06-23-2020, 07:57 PM
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Originally Posted by andrewwynn View Post
Funny you should say that my first one just leaked gas into the gauge.
Haha, I had one that didn't fit.

Bought another one that didn't have the right connector.

Bought one that had the right connector but wouldn't tighten so spewed gas everywhere.

Finally coughed up the $50 for the CTA 3445 and it works like a dream!

Good luck with the FPR! I've had this thing for 2 years and I can't even imagine what it would feel like to have it just start up easily every time LOL. A pipe dream perhaps... But hopefully it's one of the parts I bought.

Mostly I've just come to accept all this vehicles quirks. The amount of mystery squeaks and rattles are mind boggling.
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  #23  
Old 06-24-2020, 12:07 AM
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Quote:
Originally Posted by Mike1261 View Post
Haha, I had one that didn't fit.



Mostly I've just come to accept all this vehicles quirks. The amount of mystery squeaks and rattles are mind boggling.

I bought a universal kit from harbor fright [sic]. I did have to add Teflon on one joint but got it to work fine. Came with a "t" and several hose clamps that one could put inline for example to check the return pressure to the siphon jets.

Since the pump holds pressure when operating normally, you'll get a splurt when removing, better gauges have a pressure release vent so you have better control of where that goes but a paper towel wrapped around the end works ok.

I have misophonia and can't tolerate rattles at all zero percent. I'm able to keep my truck 100% rattle free. I do have clunks and now a bearing going out fortunately ruh ruh ruh is not a trigger for me.
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Old 06-24-2020, 12:09 AM
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The other suspect part is crank sensor. I almost ordered at the same time. I suspect the FPR and I "knew it wasn't the pump" right away when I remove the old one and I could hear it whirr as it's supposed to. I did not smell gas as if flooded so I do not suspect leaky injectors.
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  #25  
Old 06-26-2020, 01:24 PM
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I just replaced the Fuel Pump.

Ignition on: 49psi
Ignition off: 43psi
After 30 minutes: 33psi

How long is it supposed to take to leak down? Is it supposed to be a sealed system that maintains pressure long term? Or is it expected to leak down?

If it's not the fuel pump/check valve, and I can't find any leaks along the fuel lines, would it be the injectors?

I didn't yet replace the Filter/Regulator, but I didn't think there was a check valve in there that would impact fuel leak down. Correct me if I'm wrong please.

Thanks!

Edited to Add: While driving, randomly from time to time I smell gas. Don't know why or what that means but thought I'd mention it.
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  #26  
Old 06-26-2020, 09:07 PM
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0 psi now in only a few hours. Last time it took 2-3 days to reach 0psi before changing the pump out.

No leak at the supply line that attaches to the pump housing.

So either a leak somewhere else... Or the regulator has something to do with it? Or the injectors.

I'll change the FPR tomorrow and see how it goes.
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  #27  
Old 06-26-2020, 10:57 PM
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Video on how to determine where the fuel pressure is going.

https://www.youtube.com/watch?v=DL8toqPcXKA
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  #28  
Old 07-02-2020, 03:10 PM
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Replaced the fuel pump and it seems to lose pressure even faster.

Replaced fuel filter and no improvement.

I bought a cheap fuel check valve to install near the pump under the back seat temporarily just to confirm whether or not the new pump may be faulty.

If that solves the pressure issue then either the pump check valve is bad, or the hose connections from the pump to the housing inside the tank is loose.

If the check valve doesn't help I can at least rule out the pump area. I'll pull up the injectors in that case and see if I can observe any leakage. But I don't think I'm getting any black smoke, so it seems unlikely to me. Only other thing I can think of is a fuel system leak somewhere along the lines, which would be really annoying to say the least. I'm sure those aren't easy to observe.
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