How to Check Fuel Pressure

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Andrew Bluemel

Andrew Bluemel

10 Year
Joined
Aug 3, 2014
Threads
57
Messages
674
Location
Aspen
Ever since I bought my 96 Land Cruiser it has had issues starting in certain conditions.

Cold Starts: No Problem (Most Consisitant and Quickest)

Hot Starts: Still starts fine if it has sat for less the 5 minutes

Warm Starts: Between being completely hot and completely cold it will crank for 15 seconds before firing up

Once Running: No problems what so ever


So far I have checked the distributor for dirt, changed the spark plugs, ran a fuel additive, and kind of checked for vacuum leaks but not really sure where to check.

So I believe it might be the fuel pump or fuel pressure regulator. Is there anyway to easily check the fuel pressure when I try to start it?

Thanks!

Also if anybody else has any ideas on what it could be please let me know
 
You can check for vac leaks by spraying a TINY amount of ether (diesel starter fluid), around any joints. Any leak will show up as the engine note changes.

You can buy or perhaps hire a fuel pressure gauge, this is 'Teed' into the fuel line on the fuel rail, check the manual for fuel specs, and check it holds pressure when you switch off.

regards

Dave
 
The item you need to check your fuel pressure attaches to your fuel rail. It's kind of like a modified banjo bolt with a schrader valve on top of it. To use it you need to remove one of the banjo bolts out of the fuel rail back by your EGR valve. Then you attach your fuel pressure gauge to it, start your truck, and read your pressure. Here is a link to the banjo bolt you need for your fuel pressure tester, it's all of 8 bucks plus shipping.
Banjo Bolt M1215 | Automotive Parts & Accessories
 
Last edited:
Rifleman said:
The item you need to check your fuel pressure attaches to your fuel rail. It's kind of like a modified banjo bolt with a schrader valve on top of it. To use it you need to remove one of the banjo bolts out of the fuel rail back by your EGR valve. Then you attach your fuel pressure gauge to it, start your truck, and read your pressure. Here is a link to the banjo bolt you need for your fuel pressure tester, it's all of 8 bucks plus shipping.
Banjo Bolt M1215 | Automotive Parts & Accessories
Click to expand...

I appreciate the response. So I need this banjo bolt to check the fuel pressure? I can't find any at my local auto parts stores that suck. I guess I'm just surprised they require an adapter.


Also on another note do you hear your fuel pump when you turn the key to the on position because I can't from inside the cruiser
 
Andrew, To answer your new question, no i don't hear my pump run when i turn the key on.
 
Thanks for the hint! I was stumped on what to check next. Doing the forum and fsm dive it looks like a shot in the dark to condemn. May just have to bite the bullet
 
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