I am original owner of 1978 FJ40. Replaced the leaking mechanical fuel pump with a Toyota mechanical fuel pump. It does not consistently pump fuel to the factory carb. I can be driving for a few days, week or month and then it dies and will not start up until it sets for at least 6 hours. Not sure why this happens. Thinking of changing to an electric fuel pump. I have a Carter High Performance electric fuel pump md P4594. It puts out 7 psi. Is 7 psi too strong for the factory carb? Will it work for my FJ40? Greg
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Green Bean
SILVER Star
Just thinking out loud: It might be a simpler solution if you were able to diagnose the issue with your current mechanical fp. I assume that you changed out the fuel filter. Up stream from the fp, is the fuel line clear? Tank properly vented, etc. Good luck...
I have a 72 FJ40.. It was a year specific fuel pump due to the gas line fitting. I changed over to an electric fuel pump in the mid 80's. I have run some high $ pumps and currently run $10 (4 to 7psi) ones off ebay. They last for years and I use them for fuel transfer units I make for friends.
I have a Rochester 2 barrel, Delco distributor and a man-a-fre header. More or less came that way when I got it in 82.
I have a Rochester 2 barrel, Delco distributor and a man-a-fre header. More or less came that way when I got it in 82.
South Texas 97
GOLD Star
Not the expert but some years have a spacer, in addition to the gasket. Could it be this is not installed? I just rebuild my 76 FJ40 mechanical pump and it works very well now. My year does not have a spacer.
There is a filter before the pump, and in my case, I added a cheap transparent filter after the pump so I can see if the pump is doing its thing.
There is a filter before the pump, and in my case, I added a cheap transparent filter after the pump so I can see if the pump is doing its thing.
- How long ago did you replace the 1978 leaky fuel
️ with TOYoTA mechanical fuel pump ?- if your post several good close up photos of the top and under side views of your current TOYoTA mechanical fuel pump that is mysterious not pumping fuel I bet you get your correct diagnosis and correct answer in less then 1 metric hour ….
- wipe off camera phone of finger prints and grease please , crisp photos only please
- THIS IS THE WAY ....
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next up :
- i will give your other correct answer you need right now , you mention " Thinking of changing to an electric fuel pump. I have a Carter High Performance electric fuel pump md P4594. It puts out 7 psi. Is 7 psi too strong for the factory carb? "
- your correct answer is " the Carter High Performance electric fuel pump md P4594 is too strong for the factory carb . It puts out 7 psi. and 7 psi is way too strong for the factory carb "
- yes , @Tara your correct , a EFI fuel pump , and a oem toyota Carburetor without a return line do not work , i agree that's a POOR CHOICE ,,,,
- i agree , the oem 1978 factory Pump , along with a new OEM Revised update Fuel Filter , is BEST possible solution here , also the new UPDATED mounting bolts are a MUST !
- your initial answer the question is spot on , ,
matt
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i produced a super Technical TECH. Video that will help you just say NO , to anyone who says is OK , to Cracker Jack up that Carter P4595 Carter to your 1978 FJ40 ...
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