NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   DO YOU NEED A FPR FOR A WALBRO PUMP (https://www.nopistons.com/2nd-generation-specific-17/do-you-need-fpr-walbro-pump-69405/)

milenia 03-28-2008 08:46 PM

DO YOU NEED A FPR FOR A WALBRO FUEL PUMP TO PREVENT FLOODING ...how much will it bring my fuel pressure to ,i have my seven rewired too, and a 3rd gen alternator

milenia 03-28-2008 10:12 PM

it floods bad

1Revvin7 03-29-2008 12:07 AM

No you don't need a FPR with a walbro, it will only raise base fuel pressure by usually 2 psi. Sounds like you need to do a compression test...

milenia 03-29-2008 11:29 PM

but by having a bigger fuel pump does that lead to fludding? compresion is good, brand knew marren motorsports stock injectors ive read most post about fludding but there is no real answer to hotstart after you turn your car off ...or even a good solution i wish some one had an an idea of curing this problem ...the rx8s have this problem so its not fuel injectors or low compresion ...because brand knew rx8 floods help....t2s

fcs13 03-30-2008 12:42 AM

brand new rx8's are not 15-20 some odd year old rx7's either...they are (relatively) brand new rx8's. You might consider checking your ignition system because it sounds like you are not A.) getting enough spark or B.) getting ANY spark. I run an ebay 255 in my 88 turbo and it works fine. The only thing I complain about is it runs rich, does not flood***. You should check your trailing and leading coils along with your CAS before you spend money on something you dont necessarily need. Also spark plugs and plug wires.



-B.

milenia 03-30-2008 01:17 PM

thanks for the info mr.b do you have a simple method of checking the coils .....what plug wires do you recomend

fcs13 03-30-2008 04:26 PM

sure, simple and FUN! while the car is running yank the plug wires from the plugs and see if you get shocked, if you dont that coil is probably bad. But instead of doing that you should refer to your factory service manual and find out what sort of resistance there should be in each coil. Get ready to use your D-VOM or Analog-VOM, which ever you have to ohm them out. There isnt really any "simple" way to check, it all requires some sort of work. Also make sure the coils have a good ground and there is no paint between the contact and ground surface.



If the problem is not within the coils or the rest of the ignition system, there is a fuse for the fuel pump that you can disable. This will temporarily *fix* the flooding problem but is by no means a permenant solution. Check your plugs to see if they are fouled by now, make sure your plugs wires are not messed up or shorting on anything. Also make sure the firing order doesnt get changed when you start pulling plugs (with the engine off https://www.nopistons.com/forums/pub...DIR )



hope this helps



-B.

fcs13 03-30-2008 04:27 PM

Oh, and I recommend plug wires that reach and work :P

milenia 03-30-2008 08:02 PM

well i took my seven for a drive around the block, i accidently stalled it then i started cranking and then it was flooded ,so i called my wife she came with her truck ...i put some juExercises for low back painers on it and it fired right up ..what gives here please dont tell me my diehard battery died

fcs13 03-31-2008 03:00 PM

I doubt your battery died. I dont understand why your car would flood so bad so often. I have never had any trouble out of my fuel pump or fuel system at all *knocks on wood*. Is the car non turbo? can you hear the fuel pump humming when you first turn the key in the ignition? does it not stop when you attempt to start the car? more info would help determine the cause.


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