Please help!!! AHHHHHHHHHH frustrating

[khai_tuan_nguyen]

Hi,
My setup is b20b block with b16 head in a 97 civic. The car has JE 12:1 CR pistons and until i get hondata I have timing back at 14 to stop pinging. Well it still pinged so I was recommended to get a fuel pump and fpr upgrade until i get hondata.

So here is the problem. I installed walbro 255 lph fuel pump and modified stock fpr with B & M.

The first problem was that the fuel pressure would not go down under 60 psi and my car bogged during acceleration. I was then told that it probably was because the stock fpr was not regulating fuel and that i should get the aem one.

I recently bought the aem one and installed it, my pressure is now at 40 psi with vacumm connected, however i still can not raise psi or lower it and my car bogs more than before and at idles at certain intervals it bogs and even sometimes turns off the motor. Any ideas???

Thanks
Khai

 

[Arachnid]

i had a friend with a gsr swap and his car was mad boggin'. he later found out it was his fuel injectors, it turned out he had the wrong ones and it wasn't doing it's job correctly. 12.1 is high compression, compression in which a stock b20b cannot withstand. b20b is known to blow under that kinda compression.

 

[NotUrAverage_Si]

what are you using to adjust the fpr? pliers? (sp?)

 

[khai_tuan_nguyen]

I am using a small flathead in the top of the set screw to adjust the fpr and i turn it all the way in and all the way out and the pressure still reads the same on the gage on the fuel filter. When i changed out the orfice from 0.1 to 0.15 the pressure went up each time i primed the engine and then went down to 0 instantly. I was told to change orfices if i could not change pressure, but when i did that is what happened and the car wouldn't start because no fuel....

 

[cws13]

What ECU are you running?

 

[welfare]

check fuel filter

 

[khai_tuan_nguyen]

I changed the fuel filter already. I am running a p72. Also when i had the stock fuel pump and used the B & M fpr it worked perfectly. Then i changed my fuel pump to walbro 255lph. Then the B& M one would not regulate and it was at 60 psi. Then i got the aem one and it will not regulate it but it is at 40 psi. I changed orfice from 0.1" to 0.15" and the car would not start and pressure dropped instantly when i primed system.

KHai

 

[JDMilan]

p72 is a GSR obd1 computer, your running the B16 head ??

 

[khai_tuan_nguyen]

I know that, but the point is the fpr when i used the B & M one worked and was adjustable with the stock fuel pump, but when i changed to the walbro 255 lph the B & M and now even the aem one won't adjust it.

Khai

 

[turboB20hatch]

um dont run your car until u get ur hondata in unless u wana blow ur shyt to pieces ur ecu and stock injectors are prolly way confused by that high compression ratio

 

[JDMilan]

you know that........great....



run the proper ECU, run the stock FPR, with OEM injectors..........and you shouldn't have a problem

 

[cws13]

 

[khai_tuan_nguyen]

I fixed it, the probelm was the spark plugs were foul when i was running it at 60 psi. Once i changed that i could adjust the fpr and it does not bog now.

Thanks for the help
KHai

 

[cws13]

Just out of curiosity, how did changing the plugs give you the ability to adjust your previously un-adjustable fuel pressure?

 

[khai_tuan_nguyen]

Ok the problem is that I am using an AEM fpr but since the plugs were fouled i couldn't adjust it maybe they were not burning the fuel. I don't know but that is how i fixed it.

DOes it make sense to anyone?

Can anyone explain?