How do I test fuel pressure on an 86 2.8 tbi

ddog800 · 10-17-2009, 02:00 PM

Can anyone give me some advice on the best way to test fuel pressure on my truck? I'm driving an 86 s-10 blazer 2.8 tbi. I'm assuming there is no test point on this model. I've got the gauge found here , which I bought many years ago. All of the instructions I've got from my Alldata account and various websites say to install the fuel pressure gauge on the outlet side of the fuel filter, and then to start the engine. Unfortunately, that's rather impossible without some sort of T-adapter or something along those lines to fit between the fuel filter, gauge, and the metal pipe going up to the throttle body. Can anyone point me in the right direction on this? Is there an adapter somewhere I can purchase?

Much appreciated.

Datchevy2.8 · 10-18-2009, 08:26 AM

This is what I have, should work for what you want...
http://marine-performance-parts.com/...843505774.aspx

ddog800 · 10-18-2009, 02:04 PM

Ahh excellent, thanks

Bills Dad · 10-18-2009, 08:34 PM

I had the same question and found this which seems solid but pricey for what it is(at least to me).
http://www.automotive-diagnostic-too...-p/ta37650.htm

or this, http://rover.ebay.com/ar/1/711-53200...4&toolid=10001 http://www.amazon.com/Actron-CP7817-Throttle-Injection-Pressure/dp/B0006V2BK0/ref=sr_1_3?ie=UTF8&s=automotive&qid=1255908266&sr= 1-3

I'm thinking of getting one of these testers to include all the newer GM products we all own too!
Cheap one- http://www.harborfreight.com/cpi/cta...emnumber=92699
Better one-I like the 6ft.hose on it! This way, I can sit in car to do all tests easily too.. http://rover.ebay.com/ar/1/711-53200...4&toolid=10001 http://www.amazon.com/Actron-CP7838-Professional-Pressure-Tester/dp/B0009XQUKC/ref=sr_1_1?ie=UTF8&s=automotive&qid=1255908266&sr= 1-1

10-17-2009, 02:00 PM	#1
ddog800 Registered User Join Date: Oct 2008 Posts: 45 Location: User is: OffLine	How do I test fuel pressure on an 86 2.8 tbi Can anyone give me some advice on the best way to test fuel pressure on my truck? I'm driving an 86 s-10 blazer 2.8 tbi. I'm assuming there is no test point on this model. I've got the gauge found here , which I bought many years ago. All of the instructions I've got from my Alldata account and various websites say to install the fuel pressure gauge on the outlet side of the fuel filter, and then to start the engine. Unfortunately, that's rather impossible without some sort of T-adapter or something along those lines to fit between the fuel filter, gauge, and the metal pipe going up to the throttle body. Can anyone point me in the right direction on this? Is there an adapter somewhere I can purchase? Much appreciated.
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10-18-2009, 08:26 AM	#2
Datchevy2.8 Registered User Join Date: Mar 2008 Posts: 60 Location: Central Florida User is: OffLine	Re: How do I test fuel pressure on an 86 2.8 tbi This is what I have, should work for what you want... http://marine-performance-parts.com/...843505774.aspx
	[Reply w/Quote]

10-18-2009, 02:04 PM	#3
ddog800 Registered User Join Date: Oct 2008 Posts: 45 Location: User is: OffLine	Re: How do I test fuel pressure on an 86 2.8 tbi Ahh excellent, thanks
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10-18-2009, 08:34 PM	#4
Bills Dad Registered User Join Date: Oct 2009 Posts: 96 Location: upstate NY User is: OffLine	Re: How do I test fuel pressure on an 86 2.8 tbi I had the same question and found this which seems solid but pricey for what it is(at least to me). http://www.automotive-diagnostic-too...-p/ta37650.htm or this, http://rover.ebay.com/ar/1/711-53200...4&toolid=10001 http://www.amazon.com/Actron-CP7817-Throttle-Injection-Pressure/dp/B0006V2BK0/ref=sr_1_3?ie=UTF8&s=automotive&qid=1255908266&sr= 1-3 I'm thinking of getting one of these testers to include all the newer GM products we all own too! Cheap one- http://www.harborfreight.com/cpi/cta...emnumber=92699 Better one-I like the 6ft.hose on it! This way, I can sit in car to do all tests easily too.. http://rover.ebay.com/ar/1/711-53200...4&toolid=10001 http://www.amazon.com/Actron-CP7838-Professional-Pressure-Tester/dp/B0009XQUKC/ref=sr_1_1?ie=UTF8&s=automotive&qid=1255908266&sr= 1-1 Last edited by Bills Dad : 10-18-2009 at 08:43 PM.
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