Compatible Fuel Pressure Gauge?
 

I am having a cold start issue which only happens in near freezing weather. I replaced fuel pump last winter with the Delphi model and it "mostly" cured the issue but that could have been bc the temp wasn't cold enough.

The other day, first time i tried to start it in cold weather around 33 degrees, and it just turns over and over. I can usually fix it by cycling the fuel pump 5-6 times and the issue goes away until the next morning. Never recurs on the same day.

There are a TON of things could be causing this but i think my first order of business is to check my fuel pressures.

I'm looking gauge kits on Amazon and seeing some folks say they don't fit BMW or whatever.

Can someone recommend a gauge kit they KNOW fits the M54? Would love to land one for $30 or less but will pay up if i have to.

much appreciated!!

I bought one from harbor freight. I'll see if they keep track on my account to find the exact model.


–awr–

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Mine is from autozone I think. If it fits a standard schraeder valve, then it will fit the X5 fuel rail I believe.

Harbor Freight's kit fits the Schrader valve. They don't sell the kit I have anymore. It was like $30.

The ones you guys have that fit would be nice to know, was wanting to check rail pressure for sometimes long cranks on the 4.6 and the set I borrowed did not have an adapter that fit.

It would be nice if someone could verify they have found one that fits properly AND works properly. I have an old school Snap-on kit (was about $700 in the 80s) that has a really nice adapter that works perfect but those are not available any more.

I use the tester below that I thought I bought at Harbor Freight

Pittsburgh Fuel Injection Pump Tester #62623

Not sure they still carry this particular one...Although this model is available new and used on Ebay.

Be sure to use a little teflon tape where it screws to the fuel rail.

Schrader adapters, and new pressure tester
 

I had been using a cheap Chinese fuel pressure tester from Amazon, that wouldn't attach to the Schrader, even with the adapters included with its' kit. I bought a $25 adapter that failed after a few uses (irreplaceable O-ring), so I bought a set of two adapters, that work fine. Now I have a spare. It works with no leaks, and no Teflon tape required.
Attachment 85229

Here's a description:
The Fuel Injection Pressure Tester 305.32 Valve Adapter is compatible with several vehicle types:

Primary Compatibility:

Ford vehicles: F150, F250 trucks
Lincoln cars: Various models including Town Car
Ford Rangers: 1995-2001 models with 3.0 V6
Also Works With:

BMW vehicles: X5 E53 (2000-2006), M54 engines
Some Chevrolet vehicles
The adapter connects to the small Schrader valve on fuel rails and works with most fuel pressure testing kits. Customer reviews confirm successful use on Ford Rangers, Lincoln Town Cars, and various BMW models with M54 engines.

I recently bought another fuel pressure tester, a Performance Tool W80595, from Amazon, but I haven't tried it, yet. I have used many tools from Performance Tool before, so I expect it to be OK.
Attachment 85230

Not getting proper fuel pressure readings is as much of a problem as not reading all codes.