Zeusimo Posted November 8, 2010 Report Share Posted November 8, 2010 Having Fuel Problems W/ Truck My Truck Has A Universal Electric Fuel Pump (Faccet Something Like That) And I'm Sure It's Not Stock It Has Trouble Going Over 1200 RPMs If You Give It A little Gas But If You Floor The Petal For A Sec It Skips To 2k And Thats When I Let Go Of The Clutch To Move If I Try To Let It Go At 1200-1500 It Will Hesitate And Might Turn Off If It Does It Takes A While To Start Back Up This Isn't A Problem For Me But Whenever My Dad Drives It He's Always B!#H!NG That It Turns Off On Him All The Time (Never Happens To Me) Anyways If Mechanical Better? I Know Its A Fuel Problem And Have Read Some Negative Things About Universal Fuel Pumps Friend Says I Can Have The Electric Pump And The Mechanical Both On At The Same Time Also I Know That The Fuel Filter Is Clean Quote Link to comment
izzo Posted November 8, 2010 Report Share Posted November 8, 2010 lol, why do you put caps at the beginning of every word? Chicks usually do that :D I have a mechanical in my truck, never gave me a problem, have an electronic in my goon never gave me a problem. There is a spot on the head you can pull the cover off and install a mechanical, and be rid of the electronic one. Nice pics... Quote Link to comment
Zeusimo Posted November 8, 2010 Author Report Share Posted November 8, 2010 Found Few Pics On Google Quote Link to comment
Zeusimo Posted November 8, 2010 Author Report Share Posted November 8, 2010 lol, why do you put caps at the beginning of every word? I Learned How To Type That Way Bad Habit I Guess?:huh: There is a spot on the head you can pull the cover off and install a mechanical, and be rid of the electronic one. Yea I Know What You're Talking About I'm Might Just Need To Cut Or Add To The Gas Hose Quote Link to comment
izzo Posted November 8, 2010 Report Share Posted November 8, 2010 Hmm, you might get away with just adding the mech fuel pump in, and disconnecting the power on the electronic one? ive heard of some people using an electronic pump, with a mechanical to keep a steady 3lbs of pressure. Quote Link to comment
Logical1 Posted November 8, 2010 Report Share Posted November 8, 2010 I used my mechanical pump for a while but wanted a little bit more flow. On some advice I picked up a carter electric fuel pump: Carter P4070 Fuel Pump It supplies MORE than enough fuel to my dual SU's even when I STOMP on it and I have big jets in them :D Just be sure to put it as low and close to the gas tank as possible. Also not sure of your set-up but if you have a return line sometimes the fuel will flow through the return easier than into the carb/s thus starving the float bowls. I put a small check valve in my return line that only opens when the fuel pressure is at maxim. Quote Link to comment
datzenmike Posted November 8, 2010 Report Share Posted November 8, 2010 Regardless of how the fuel is pumped, the carb has a reservoir of fuel that will be plenty to get it going and drive for a block or two. All the pump has to do is keep it full. Take a look at the bull's eye sight glass... is the fuel level showing??? If carb is full then (with motor off) look down the carb and pump the throttle vigorously. You should see a strong squirt of gas into the primary barrel. If no or very weak, the accelerator pump is old and leaking. If there is gas squirting then the primary jet seems to be partially blocked and you aren't getting enough gas. 1 Quote Link to comment
banzai510(hainz) Posted November 8, 2010 Report Share Posted November 8, 2010 In the photo I see 2 fuel pumps? the box type and the newer one.. Why is that? 2 pumps in series together. Am I missing soemthing here?most eleltric pumps need a regulator unless you know the pressure of them. carbs only want like 2.5 to 4 pounds pressure. as for this staement Friend Says I Can Have The Electric Pump And The Mechanical Both On At The Same Time. BUT WHY!!!!!!!!!!!!!!!!!! find better friends. I guess it can be done as seen in rally cars Quote Link to comment
Zeusimo Posted November 8, 2010 Author Report Share Posted November 8, 2010 I Don't Think Its The Fuel Pump Anymore... But I'll Probably Still Get It 2 Is Better Than One Anyways This Is Where It Would Go Right? This Is My Fuel Pump The Pics Above Are From Google It Reads Full Whats This Screw For? It Won't Tighten Stays Loose Uploading Vid Will Post Once It Has Uploaded Quote Link to comment
Zeusimo Posted November 8, 2010 Author Report Share Posted November 8, 2010 1:50 I'm Sure Something's Wrong With The Carburetor* Quote Link to comment
banzai510(hainz) Posted November 8, 2010 Report Share Posted November 8, 2010 gas should squirt on the left side. If weak the accel pump might need to be adjusted(if they can be adjusted I dont know myself) or the accel pump diapram might have hole in it. The right side of a stock Hitachi is vaccum operated. so if you rev the motor up and put your hand on the left side youll see the right plate open up a bit. or just push it with your finger and it should run(at higher rpms). start looking for a Weber 32/36. since you have a nice truck I get a new one. 32/26 DGEV -IC model it has the idle cutoff like you got The pump should be under 4 pounds so ZI dont know what pump you have so enter the model # and find out but I think its OK. also where that plate is where a mach fuel pump would go. Quote Link to comment
Zeusimo Posted November 8, 2010 Author Report Share Posted November 8, 2010 since you have a nice truck I get a new one. :blush:Is The Weber Smog Legal? Doesn't Matter But Future Knowledge Helps Don't Want To Fail Smog Just Because I Didn't Switch Carbs Before Test also where that plate is where a mach fuel pump would go. Posted Above But I'll Double Post :PTo The Right Of The Ground Cable Quote Link to comment
merlin Posted November 9, 2010 Report Share Posted November 9, 2010 i have an electric mitsu pump on the 521 and them the fuel goes through the stock mechancial pump as a way of routing it... stupid but whatever... i had the same problem, it was a carb/fule line issue... i revved the engine up as high as it would go and held it -2200 rpm at first, ... the lines/carb finally cleared and i got a huge backfire then the engine would rev up to 5500rpm. after that it has run like a clock. What about blowing your lines nad fuel pump out with compressed air? ( is that safe?) Quote Link to comment
datzenmike Posted November 9, 2010 Report Share Posted November 9, 2010 The screw is stripped. Leave alone and cross fingers. Don't look at it and never mention it and maybe nothing will happen. :D Did you pump the throttle and look for a strong squirt from the accelerator pump? i have an electric mitsu pump on the 521 and them the fuel goes through the stock mechancial pump as a way of routing it... stupid but whatever... i had the same problem, it was a carb/fule line issue... i revved the engine up as high as it would go and held it -2200 rpm at first, ... the lines/carb finally cleared and i got a huge backfire then the engine would rev up to 5500rpm. after that it has run like a clock. What about blowing your lines nad fuel pump out with compressed air? ( is that safe?) Had that as well merlin. Water in the carb. Sinks to the bottom and plugs the jet and air bleeds. Revved the shit out of it and eventually sucked it through. Ran better and better. If water, gas line anti freeze will help. . Quote Link to comment
Zeusimo Posted November 9, 2010 Author Report Share Posted November 9, 2010 Did you pump the throttle and look for a strong squirt from the accelerator pump? The Vid On Post #10 Mights Help But It's A Bit Inconsistent Kinda Like Its Just Randomly Spitting Instead Of Giving A Nice Steady Flow Quote Link to comment
Zeusimo Posted November 9, 2010 Author Report Share Posted November 9, 2010 Whats The Difference Between DGEV And DGAV? Would This Work?? 100 $_$ ;) http://community.ratsun.net/topic/24278-weber-dgav-3236/page__p__345365#entry345365 Quote Link to comment
ariascarlos1990 Posted November 9, 2010 Report Share Posted November 9, 2010 The difference is one being electronic choke (DGEV) and the other being water choke (DGAV) I personally stay away from water choke carbs. Quote Link to comment
hang_510 Posted November 10, 2010 Report Share Posted November 10, 2010 on the ride this weekend, someones fuel line got clogged with some RTV, the source of it was unknown. it was at the tank outlet, right before the pump. the tank had been swapped in 6 mos ago. Quote Link to comment
Zeusimo Posted November 11, 2010 Author Report Share Posted November 11, 2010 Fixed It With A Hammer :cool: Still Thinking About Getting New Carbs But I Want Dual Side Drafts Gonna Ask Dad For Christmas As I Am Still A Little Kid Without A Job Nah... But Really Took It Apart, Cleaned And Put It Back Together But Now It Idles At 1200 Instead Of The 900 It Was Before :huh: Quote Link to comment
banzai510(hainz) Posted November 11, 2010 Report Share Posted November 11, 2010 idle at 900 is perfect Quote Link to comment
Zeusimo Posted November 11, 2010 Author Report Share Posted November 11, 2010 Yeah It Was 900 I Might Have Cleaned It A Little Too Much (If That's Possible) <_< But I Will Adjust Tomorrow ;) Quote Link to comment
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