I just put the raptor 150 in my truck with the big line kit (no drawstraw) and i keep having troubles, or at least i think i do. I may not like it bc im compairing it to the stock pump. First of all, sometimes it sounds like its grinding rocks, i know (for a fact) theres no rocks in my gas tank :hehe: so is this normal? Also, is this pump a constant flow (stays on all the time) or is it a surge pump? It sounds like the pump turns on when the truck is first running, then the engine noise covers the pump noise so i cant tell if the pump is still running but while im driving down the road the pump gets REAL loud they goes back to its normal self. Also, it doesnt hold a constant psi. Ill idle at 20 then a few mins later its down to like 11 or so. Also i went out to start it earlier and it took like 10 secs for the truck to start. Usually you just look at the key and it cranks, but not this time. Sorry to ramble on, but i just dont know if i have a bad pump, or its just me...
unhappy with the raptor...couple questions
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The raptor in my experiance is a constant duty pump. mine does vary in noise level while driveing (not much insulation/sound deadner in my cab). Did you make an extension wiring harness from the stocker pump or did yours come with a relay harness? i can hot wire mine (stub harness I use to remove air from the system)and it will maintain 25psi @idle, normally Im 23psi at an idle, as im wired up on an extension harness, and am in th process of building a relay harness, thus I believe my pressure variations and noise is due to voltage drops. example... while the truck is warming up in the morning, the psi is at 23. then the grid heaters kick in, and the pressure drops to 18. then as the heaters dissengage the psi goes up to 23 again.... Did you adjust the fuel pressure screw on the valve boddy of the pump? and what kind of fuel pressure gauge are you running,,,, Electric or Mechanical... where is it tied into your feul system.... mine is a mechanical Dipricol 0-30psi, with a snubber valve at the inlet of the VP44, another note.... if you are running mechanical or electric with an isolator make da## sure you got all the air out of it..... if mechanical the snubber valve is a must, otherwise you will have eratic pressures.
im running the relay harness from AD. And yes ive been playing with the regulator on the pump for liek 2 days now. Im running an autometer mechanical with a snubber. Its all tied into the VP. Im pretty sure i got most all the air out... im not running an isolator bc i have 4an steel braded line run into the cab, not cheap compression fittings and nylon hose. Does the truck need to be running when i "purge" the gauge line? Or just the pump? And i shouldnt be worried about the rock grinding noise???
Thanks!!
Thanks!!
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the rock grinding noise, should sound like one of the kids rock polishing kits,,, just without the clunking, mine is a noisy little *******, sorta whoorls and buzzes..... 4An should be ok,,, mine is 1/8 copper with some coils at both ends for shock,,, my snubber valve is at the VP and is tightened down to about 1.5 or 2 turns from being closed. YES the pump needs to run while bleeding the air... this is th messy part... open the snubber and run the pump, lossen the fitting at the gauge, (keep a rag nearby) and just let is seep out for about 25-30 seconds. The pump will probly stop sometime while this is going on... just bump the key on start to activate the pump but not the engine.... you can do this with the engine runing but its a liittle simpler with out and less noisy. then go up front and close your snubber down.... check for leaks in all of your connection with the big line kit. (how big are your lines, -6AN =3/8 thats what I run) (most on here think you have to have 1/2" or bigger, personally you lose pressure and increase volume by doing that )(and the line from the filter bucket to the VP is actually 5/16). another thought on the pressure variation..... your girlfriend isnt jelous of your truck and tamponed your tank?
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With my raptor 100 i have had some of the same problems with mine only mine gets to the point where the truck dies and wont start, after looking into it turns out it is sucking air from the connection on top of the tank or so i think i ordered a draw straw so when it gets in i will drop the tank and see just what is going on
thats going to be a mess purging the gauge in the cab...i may have to re think this. I cracked it at the snubber and let fuel leak out, but thats about it. I didnt do it at the gauge. I guess ill try that tonight. I hope i dont have to do the draw straw...im tired of working on this thing.
I think i found the problem...on the fitting that screws directly into the stock filter housing there is a o-ring on one side (that screws into the filter housing) then on the other side is a flare ftting (where the outlet hose from the pump attaches). Is there suspose to be a crush washer on the o ring size? im 99% sure i left it on when i removed the stock line... just wanna check.
i got it going good now, it idles 20psi and running down the road it drops down to about 10. I think its a filter issue now. Going to change that tomm and see what she does. However i was driving and the truck started bucking so i pulled over. It never died, just felt like she ran out of fuel. As soon as i pulled over it started running fine. Any thoughts?
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how much fuel in your tank, sometimes with a draw straw, youll have 1/4 tank issues. if you aint running a drawstraw, its probably is sucking the factory straw shut, ive had one on my 99 farm truck since august, no issues at all
no drawstraw and 1/2 tank... I clearly asked AD if there would be any problems with the 150 and the stock tank pickup and they said no. Wonder if they will swap out the 150 for a 100??? Also does the drop in pressure sound like a fuel filter issue?
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yeah, it could be a bad fuel filter, i assumed you put a new one in with the new pump. ive had that problem before, fuel filter too dirty to flow. id keep the 150, i dont think its a pump issue, to me it sounds like a crackd suction tube or a clogged filter or line. as for the noise, thats normal on any aftermarket pump, you should hear my fass pump on my pulling truck compared to the raptor 150 on my stock 99, its even louder.
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when my suction tube cracked on my pulling truck , it did almost the exact same thing yours is doing, i put a draw straw kit in for 30 bucks and it fixed it altogether
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low or in consietant fuel pressure could cause it to buck,been there done that too. a filter can cause it not to get enough fuel which can cause it to buck or shutter, mine would do it back about 60-70 mph or about 2000 rpms under load
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i got the one for my pulling truck which is a 5/8 draw straw which is huge from vulcan performance for bout 40 bucks plus shipping and and i got my 1/2 inch one from TST for like 30 something after taxes but since i live just a few miles from them, i didnt have to pay shipping. TST Products, Inc.
thanks man, big help! im just thinking...theres 2hoses on the fuel tank. A fuel line and a return line. The truck wouldnt run at all if i had the raptor supply line hooked up to the return port on the tank correct? just making sure.
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huh it may have enough suction to get some fuel but i doubt it, im really not sure, ill look and see which one you should have it connected to, i cant remember off the top of my head
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