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Thread: 81 miles on 3/4 of a tank of gas.

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Posts: 11-20 of 29
2011-02-23 18:22:18
#11
Originally Posted by blairellis
I almost guarantee it. A car should never buck. Bucking comes from metered air leaving the system. It happened to me when my EGR vacuum hose had a hole in it. Was driving me batty. Couldn't figure it out until I pressurized the engine with air.


My EGR system is capped off and I double checked any and all hoses to no avail.
2011-02-23 18:23:59
#12
Originally Posted by XxToKeSxX
Did you install the injector o-rings correctly... if you pull the rail and prime the pump does it trickle?


The new injectors came with new o-rings already installed and I was very very careful during the installation. The whole process of changing the injectors went of without a hitch. I did not pressurize or blead the injectors before use though.
2011-02-23 18:24:31
#13
Originally Posted by GT2871RBLUBIRD
sounds like it could be fouled spark plugs, or dirty maf could def cause poor gas mileage


MAF is brand new and cleaned it anyway, plugs are brand new and burning normally.
2011-02-23 21:00:27
#14
There is a chance part number 17226 is leaking. I have had 2 b13s with leaky hoses.

172 Fuel Tank :: Fuel & Engine Control :: Genuine Nissan Parts :: Sentra / NX Parts (B13) 1991-1994 :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com

You can see if the hose is wet after a drive. If it is it is cracked.
2011-02-23 22:13:41
#15
Originally Posted by natethebrown
There is a chance part number 17226 is leaking. I have had 2 b13s with leaky hoses.

172 Fuel Tank :: Fuel & Engine Control :: Genuine Nissan Parts :: Sentra / NX Parts (B13) 1991-1994 :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com

You can see if the hose is wet after a drive. If it is it is cracked.


I have replaced this hose on 3 different cars over the years.Definately check that
2011-02-23 22:54:19
#16
Originally Posted by natethebrown
There is a chance part number 17226 is leaking. I have had 2 b13s with leaky hoses.

172 Fuel Tank :: Fuel & Engine Control :: Genuine Nissan Parts :: Sentra / NX Parts (B13) 1991-1994 :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com

You can see if the hose is wet after a drive. If it is it is cracked.


Wow, thats new to me I will check it thanks...let you know
2011-02-23 22:54:44
#17
Originally Posted by eggman
I have replaced this hose on 3 different cars over the years.Definately check that


I had never even considered checking back there
2011-02-23 23:38:04
#18
Originally Posted by clean_classic
I had never even considered checking back there


One car would leak when it was over 3/4 tank when I put it on ramps or parked on a steep hill.

One of them only leaked while running for a bit and once parked it would stop(because of lowere fuel pressure as it leaked.

I had one car that would get bad mileage,but the gas evaporates so fast there is no puddle.Then I put it up on the ramps for an oil change and smelled gas.

On another car I figured it out by accident.I usually pay at the pump,but one day I filled up and went inside....when I came back out there was a puddle there..
2011-02-23 23:46:26
#19
Mine is leaking at the larger hose from the filler neck to the tank, but only when I've just filled up and it stops dripping after ~20 miles. Never put two and two together that that could be causing my bad gas mileage. Sorry to say it, but I love when other peoples problems make me realize solutions to my own.
2011-02-23 23:56:38
#20
Where exactly is that hose located? What do you have to do to access it? I want to check mine now too lol
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