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Fix known issues 1st Check for vaccum/boost leaks Should idle at 1400-1500 when doing a cold start then idle down as the engine warms up

was it idling at 1400 rpm when engine is cold or hot? engine is suppose to idle at 1400rpm when cold and around 600 when hot how did you adjust the idle? you should look into your ISCV(idle speed control valve)

no set to factory pressure if no tuning device is used

Called and spoke with Jeff at Walbro Technical Support. He seems to think i have air bubbles in my fuel filter and recommends a new fuel filter. Im going to take his advice in the next few weeks. New fuel filter, new strainer, clean tank good, constant 12V mod to pump and see what happens...

hmmm well hopefully you figure it out ill be doing the shim mod and regulator mod sometime soon

heres a good write up on supraforums(yes i know but it is a good write up) http://www.supraforums.com/forum/showthread.php?267655-How-to-make-a-a340-last(56kers-take-a-nap) on page 2 guy by the name of mdr40z post 31 had some issues cause he mixed the springs up hope this helps

I would try the valve body from your old trans Well make sure they're the same See what happens then Iirc reading somewhere that someone mixed up 2 of the accumlators and had similar issues I'm going to look up the thread and post link

2nd gear stops around 70 i think i would do it on my way home tonight but walbro is failing :) you would be in 3rd or 4th to be doing 110 mph did you mess with the TV cable? or mess with accumulators? (not sure if they would have anything to do with issues)

thanks for the chart very helpful

ok i see what your saying about the pump head being bigger ill do some more research thanks

for the price of the 400 compared to the aero 340 the 400 is ruffly $20 cheap (quick search) im also wondering if this will work with the oem mk3 pump hanger?

i wonder how long they will last? i have read a bunch of threads with complaints of the life spand of walbro pumps

im sure there's a lot of things you would do :) contacted walbro to see if theres anything they can do for me since the pump was only used for 6 months

would running a single 400 require bigger fuel line? thanks IJ

so i recently been having problems with my walbro 255 bought it 2 yrs ago for another supra but never installed installed the pump into my 91 due to the old pump was bad(oem) walbro has been installed for 6-7 months and i didnt do the 12v mod the past few weeks my walbro has been getting...

did you contact devin?

wow didnt realize the amount of post that 1 person has is such a big deal :thefinger

haha dam you caught me just another newbie (since i have only had this account for 1 yr)

You just talked shit about "honda forums" :)

when i start my car it makes a weird noise. what do you think it could be?