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-   -   '95 Jimmy 4x4 Bad Acceleration (https://blazerforum.com/forum/engine-transmission-35/95-jimmy-4x4-bad-acceleration-94929/)

newguy 07-12-2017 11:09 AM


Originally Posted by Tynan Tha Real Dill (Post 678311)
Do they have to be those exact bolts with the springs or just a bolt and nut ?

yes they should
auto parts store

Tynan Tha Real Dill 07-15-2017 12:18 PM

1 Attachment(s)
Is this the Schrader valve to check the fuel pressure?

Tynan Tha Real Dill 07-15-2017 12:29 PM

Transmission must've been over filled. Dropped the pan then added 5 quarts and 24 oz of Lucas transmission fix. Acceleration is almost perfect, so I'm headed to check fuel pressure now. Then tighten those exhaust lines down. I also noticed the oil is a little over filled so I'm going to drain some out and see what that does. In case I change the oil, how many quarts at refill?

newguy 07-15-2017 08:23 PM

buy 5 but check during the 5th one

Tynan Tha Real Dill 07-16-2017 02:33 PM


Originally Posted by newguy (Post 678419)
buy 5 but check during the 5th one

Ok. And here is a video of the fuel pressure test...


Transman304 07-16-2017 02:40 PM

Did you fix the twisted fuel line at the filter? If so you may have a bad fuel regulator. When you said motor oil was overfull does it happen to have a fuel smell? If the regulator is leaking externally it will go in the oil.

Tynan Tha Real Dill 07-16-2017 02:46 PM


Originally Posted by Transman304 (Post 678442)
Did you fix the twisted fuel line at the filter? If so you may have a bad fuel regulator. When you said motor oil was overfull does it happen to have a fuel smell? If the regulator is leaking externally it will go in the oil.

No I haven't had the money for those pieces to build another line. I can see if I smell gas in the oil when I go to drain some in a second. Would the twisted line cause the rapid leak down on the gauge? And could that regulator leak cause my lack of acceleration?

Tynan Tha Real Dill 07-16-2017 02:49 PM


Originally Posted by Transman304 (Post 678442)
Did you fix the twisted fuel line at the filter? If so you may have a bad fuel regulator. When you said motor oil was overfull does it happen to have a fuel smell? If the regulator is leaking externally it will go in the oil.

I assume the fuel filter is in working condition too.

Rusty Nuts 07-16-2017 07:56 PM

The twisted line could cause the lack of acceleration and the regulator leak could cause the rapid leak down on the gauge. Your video shows an immediate jump to 60 psi. That's good pressure. Then it drops immediately. That's a failed leak down.

The next step is to test the fuel pressure and leak down at the filter. It should reach 70-100 psi and remain above 50 psi for 10 minutes. If the pressure holds above 50 psi at the filter, then the leak is in the intake. If not, the leak is in the tank.

Tynan Tha Real Dill 07-16-2017 08:44 PM

Ok I'll do the test at the filter. What about the possibllity of bad o2 sensor? This guy has the same symtoms as mine...

https://youtu.be/3hznBblo0Ys


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