Low cost Fuel Pressure gauge

[blocke]

Looking at getting a low cost fuel pressure gauge to diagnose my hard-start issues, and keep an eye on fuel pressure down the road. I dont want to buy a test kit, rather have something that I can leave installed and monitor as-needed.

Looking for something like this:

http://www.amazon.com/Mr-Gasket-1560-Pressure-Adapter/dp/B000CMD55S/ref=sr_1_17?s=automotive&ie=UTF8&qid=1327510460&sr=1-17

Any recommendations?

[nando]

you need one rated for EFI. that's a low pressure gauge. it needs to go up to at least 60-70psi to be useful.

also, get something fluid filled, or the needle will just bounce around.

I got a pretty nice gauge on ebay a couple years back for around $25.00. fluid filled, 100psi. really nice, I think it was even made in the USA.

[blocke]

you need one rated for EFI. that's a low pressure gauge. it needs to go up to at least 60-70psi to be useful.

also, get something fluid filled, or the needle will just bounce around.

I got a pretty nice gauge on ebay a couple years back for around $25.00. fluid filled, 100psi. really nice, I think it was even made in the USA.

Damn thanks for the input, I would have bought that thing and been pissed

[slippery]

Where are you going to install it? I would like to do something like this as long as it plug and play.

J

[smooth]

I want to do the same thing but I'm more interested in something that can be used to test and then removed after diagnostics are done. I'm not particularly interested in running around with an extra gauge.

If you come up with a solution please make sure to post it here.

[FLG]

If you plan on keeping this permanently mounted under the hood dont go with fluid filled...once they get warm/hot they wont read correctly.

[AndrewBird]

If you plan on keeping this permanently mounted under the hood dont go with fluid filled...once they get warm/hot they wont read correctly.

Never heard of this before. Care to elaborate?

[deutschman]

Ireland sells a whole kit for about $135 shipped in CA.

[FLG]

on my phone so pain to search for things but if you do a Google search for something like "liquid filled fuel pressure gauge incorrect when hot" or something similar you'll find plenty of threads.

Sent from my Galaxy Nexus using Tapatalk

[AndrewBird]

After reading a bit, it is due to the fact that oil filled gauges are hermetically sealed, so as the oil inside heats up and expands, it counters the pressure from the fuel coming in, giving you a low reading. It only affects low pressures gauges though and if you just pop the fill plug off the gauge to release the internal pressure, they read correctly.

So in the case of the original poster, an oil filled gauge should work fine, especially if you follow the directions and "burp" the gauge before checking the reading.

[FLG]

Good to know...im used to carbs and low pressure mechanical pumps and always stayed away from oil filled for that reason.

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[TobyB]

Mine mysteriously has the work 'oil' printed on the face, but it seems to work just fine...

I use the VDO electric, and about all it's good for is 'yes, I have some'

It fluctuates with plenum pressure, since the fuel rail is referenced to that.

t