fuel pump of choice"?

phillip wigington · 03-17-2010, 11:01 AM

just curious? what is your fuel pump of choice! i run a bracket truck and have been having issues with the fuel pressure down track. its fine in low gear and when i shift to high gear it seems to POP! when under a load. like a lean out situation. i dont have a pressure gage visable while driving YET!!! lol i run 7.25 lbs at regulator and have checked everything under the sun so far... valves, fuel jets, timming, coil, any suggestions?? remember its only in high gear! even in the burn out. thanks DOES THIS SEEM TO BE A FUEL PRESSURE OR VOLUME ISSUE TO YOU? thanks phillip

Bill Baer · 03-17-2010, 01:23 PM

Phil

Try reducing the gap on your spark plugs (-.010) and make a pass and see if the pop goes away. High gear is where the highest load occurs and that is usually where ignition problems show themselves.

mannymen · 03-17-2010, 02:31 PM

I had a similar issue and talked to Product Eng about my fuel pressure setting for gas and the routing of the lines from regulator to the carb. I was running an adjustable fuel log at the time. Product Eng mentioned to bump up to 8.5 lbs and to keep the regulator in front of the motor with separate lines run from the regulator to the carb bowls. I haven't had your same problem since and he (can't remember his name) has seen many issues with fuel line routing and fuel logs causing regulator output issues. Hope this helps some

d1hitter · 03-17-2010, 08:06 PM

cracked rotor.

rayfin · 05-09-2010, 12:29 AM

Had the same problem. Ditched my mechanical fuel pump and used an electric only. I think todays gas sucks.

astikhossw · 05-09-2010, 08:12 AM

cracked distributor cap.check it good.

rayfin · 08-03-2010, 11:07 PM

Did you ever figure it out ?

03-17-2010, 11:01 AM	#1
phillip wigington Junior Member Join Date: Aug 2008 Location: canton ga Posts: 6 Likes: 0 Liked 0 Times in 0 Posts	fuel pump of choice"? just curious? what is your fuel pump of choice! i run a bracket truck and have been having issues with the fuel pressure down track. its fine in low gear and when i shift to high gear it seems to POP! when under a load. like a lean out situation. i dont have a pressure gage visable while driving YET!!! lol i run 7.25 lbs at regulator and have checked everything under the sun so far... valves, fuel jets, timming, coil, any suggestions?? remember its only in high gear! even in the burn out. thanks DOES THIS SEEM TO BE A FUEL PRESSURE OR VOLUME ISSUE TO YOU? thanks phillip __________________ Some days your the dog! Most days your the hydrant!. Last edited by phillip wigington; 03-17-2010 at 11:18 AM.

03-17-2010, 01:23 PM	#2
Bill Baer Senior Member Join Date: Jul 2007 Location: Nothern IL Posts: 596 Likes: 1 Liked 1 Time in 1 Post	Re: fuel pump of choice"? Phil Try reducing the gap on your spark plugs (-.010) and make a pass and see if the pop goes away. High gear is where the highest load occurs and that is usually where ignition problems show themselves. __________________ Bill Baer 3391 SC, 339B SC, QR

03-17-2010, 02:31 PM	#3
mannymen Senior Member Join Date: Apr 2003 Posts: 728 Likes: 5 Liked 13 Times in 7 Posts	Re: fuel pump of choice"? I had a similar issue and talked to Product Eng about my fuel pressure setting for gas and the routing of the lines from regulator to the carb. I was running an adjustable fuel log at the time. Product Eng mentioned to bump up to 8.5 lbs and to keep the regulator in front of the motor with separate lines run from the regulator to the carb bowls. I haven't had your same problem since and he (can't remember his name) has seen many issues with fuel line routing and fuel logs causing regulator output issues. Hope this helps some __________________ N/A

03-17-2010, 08:06 PM	#4
d1hitter Banned Join Date: Nov 2009 Location: @ the track Posts: 43 Likes: 0 Liked 0 Times in 0 Posts	Re: fuel pump of choice"? cracked rotor.

05-09-2010, 12:29 AM	#5
rayfin Member Join Date: Mar 2009 Location: sioux city Posts: 134 Likes: 1 Liked 0 Times in 0 Posts	Re: fuel pump of choice"? Had the same problem. Ditched my mechanical fuel pump and used an electric only. I think todays gas sucks.

05-09-2010, 08:12 AM	#6
astikhossw Member Join Date: Jul 2008 Location: moreno valley Ca Posts: 266 Likes: 2 Liked 20 Times in 9 Posts	Re: fuel pump of choice"? cracked distributor cap.check it good.

08-03-2010, 11:07 PM	#7
rayfin Member Join Date: Mar 2009 Location: sioux city Posts: 134 Likes: 1 Liked 0 Times in 0 Posts	Re: fuel pump of choice"? Did you ever figure it out ?