1997 4WD 2.7L - No Fuel Pressure After Headgasket Replacement

Whats the airflow # in grams/sec

ecm is cutting your fuel almost off the chart......it thinks you're getting way more air than real....

or its dumping in way too much fuel than needed for some reason....which is doubtful

 

MAF is showing 9.4
I think that's high last thing I read was that it should be close or match the displacement of the engine so it should be 2.7ish?

I'll try to find a video for how to clean the MAF properly all I did was shoot it with MAF sensor cleaner.

 

Warmed up it sits at about 7.0

 

The MAF Grams/Second matching engine displacement guide is for the engine being at base hot idle (700-800 RPM), your at 1600.
Fuel trims look good on that capture though.

 

You seem to be constant around -20% fuel trim, you didn't happen to replace injectors with some crap ones did you?

 

That's highly possible...

$60 GMBooskr Fuel injector 23250-75040 Compatible with 1995 1996 1997 1998 1999 Toyota Tacoma 2.4L I4 (Set of 4)

https://www.amazon.com/dp/B0C8ZCWG33

 

Ehhh.....

Those will create more problems than they will help.

OEM injectors only on these trucks.
You still have ethe old ones?

Why did you replace the old ones?

 

Searching the garage for the old ones, seems more and more that I tossed them. I don't know what I'm doing, I figured while I had easy access I might as well swap them out.

 

I found the old ones! I'm going to steal the O Rings and the bug rubber washer seals from the new ones.

 

Yea 4 injectors for the price of what one would normally cost, I'd be highy suspect.

 

Yay! Okay old injectors installed and it goes into Drive and Reverse without stalling. Adding fuel trim images now, idle still high at 1500 and drops to 900 with engine load.

Now should I be looking for a vacuum leak or is the TPS inaccurate?

Cold start idle

Shifted into Drive

Warmed up idle

 

Do the fuel trims start to drop when driving?
If so, I'd look for a vacuum leak.

 

Took it around the block a few times, I'm not getting any fuel trim readings on the app. Found out I have no power steering and hear a hissing from the brake booster.

Image is in idle parked after the drive

 

The booster works off vacuum.
I'd see if I can fix the hissing.
Check the hose going to the booster.

 

Hose looks good, removed it capped off an end and pushed air into it held pressure sprayed soapy water no bubblies.

 

Brakes seem to be working better after removing and putting the vacuum hose back on guess it was loose.
I added power steering fluid and the pump sounds angry with me. What did I do to upset it?
https://streamable.com/vgslmd

That sound continued through cold to warm and 5 minutes of driving around the block.