7mgte walbro 255 Lph

[andyr33]

7mgte 100% stock.my original fuel pump dead so it cost too expensive to buy an original so i bought the walbro 255 kit from drift motion . after instal i start and the engine dont runn good. maybe the pressure of fuel are to high? another think. I flush all the gass from the tank when i change pump and I use 87% octane fuel maybe is the problem?

---------- Post added at 10:55 PM ---------- Previous post was at 10:44 PM ----------

7mgte 100% stock.my original fuel pump dead so it cost too expensive to buy an original so i bought the walbro 255 kit from drift motion . after instal i start and the engine dont runn good. maybe the pressure of fuel are to high? another think. I flush all the gass from the tank when i change pump and I use 87% octane fuel maybe is the problem?

the engine run between 500/700rpm

 

[CajunKenny]

Whoa! Two threads...?

Ok. With the Walbro 255, you have to drill out the 'J' tube.

 

[Nick M]

And your car smokes black how much?

 

[CajunKenny]

^

 

[89supra7mgte]

Drill out or bypass the j-tube, they have a bypass kit also. also these cars run way better on 91 octane or higher. So try and drain your gas and put in 91 and go from there.

Also back to the j-tube deal, i actually only thought you needed to drill or delete when upgrading the hole fuel system, injectors, afpr, and afm? Is it necessary just for the bigger pump.

---------- Post added at 11:52 PM ---------- Previous post was at 11:51 PM ----------

Drill out or bypass the j-tube, they have a bypass kit also. also these cars run way better on 91 octane or higher. So try and drain your gas and put in 91 and go from there.

Also back to the j-tube deal, i actually only thought you needed to drill or delete when upgrading the hole fuel system, injectors, afpr, and afm? Is it necessary just for the bigger pump.

 

[andyr33]

the ''J"" tube is the return fuel in the tank? situate on the fuel pump braket?

 

[89supra7mgte]

no j-tube is on side of engine under intake manifold and yes it is return line to tank.

 

[andyr33]

ok i find on google. someone know what is the size of the hose ? i will make it home made

 

[supraguy@aol]

All you have to do, is remove the two lines from that J-tube, unbolt it from the side of the motor, use a drill to open up the restriction on one end, and put it back on.
Easier than splicing hoses together, unless you're adding an adjustable fuel pressure regulator(which you probably should).

 

[andyr33]

tanks everybody I will do it today and give feedback after