MX-3 Dying - RotaryNews.com

subject:	Starving
author:	drifterbynight
date:	December 10, 2004 - 9:05am

I have a 260hp RX7 S4 13b turbo. It has been running fine after a few little things were ironed out. I have had 3 new 600+hp Fuel pumps installed and 2 New Fuel tanks because it keeps starting to starve itslef when i try to give it power. As soon as i feed it and get to about 10psi boost it farts and backfires really bad and looses nearly all power. My mechanic today said the fuel pressure was only reading 20 and was supposed to be reading 40 at idle? He was confused because of the new pump and tank he only just installed, so he again installed a brand new pump but after about 50kms its starts again. Its back there every second day and its got me stumped and rather pissed. It was cutting out tonigh once i got down to and below half a tank, but then eventually was cutting out with a full tank. This never ending Problem is killing me and my wallet. Ive had it dyno tuned twice in the last 2 weeks. Any ideas at all? I will try anything suggested. Fuel pump again? Tank? Turbo? Some other special part maybe? Please help me im really desperate

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subject:	20-40 psi?! Too low!!
author:	Dan Mazzella
date:	December 22, 2004 - 11:03am

Look on google for a surge tank

also, make sure youhave a fuel injection fule pumps.... not carb ones. The fule pressure on FI cars needs to be 100-200PSI +

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subject:	Michael
author:	No Rotor
date:	October 23, 2004 - 1:21pm

Yeah,

I had a v6 MX-3 that did this. I brought it to the dealership and the problem was the main computer. It was over-heating, it then shuts off the engine. As I recall, it cost about $500 for a new CPU. With the new cpu, the problem was fixed.

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subject:	why can't find my comment?
author:	No Rotor
date:	October 21, 2004 - 9:36pm

why can't find my comment?

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subject:	If you login, and don't post
author:	Dan Mazzella
date:	October 22, 2004 - 3:36pm

If you login, and don't post anonymously, then you would probably be able to better track your postings.

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subject:	Put a rotary in it.
author:	Dan Mazzella
date:	October 21, 2004 - 9:10am

Put a rotary in it.

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subject:	MX3 dying
author:	No Rotor
date:	October 1, 2004 - 4:12am

You probably have a vacuum leak in the intake system.

rgds,

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