PETERPOOP's Turbo Build Thread. - Page 7 - Toyota Yaris Forums

Focus_Sh1ft · 12-13-2010, 02:50 PM

I really think it's the fuel pump as well, but I can't offer any explanation as to why. Wouldn't all the blitz people experience similar problems?

The injectors maxing out just doesn't make sense though. 1ZZ should easily cover 8 psi of boost...

What's the life expectancy on a fuel pump? Maybe Peter's is on its last legs?

cdydjded · 12-13-2010, 04:55 PM

Quote:

Originally Posted by Focus_Sh1ft

I really think it's the fuel pump as well, but I can't offer any explanation as to why. Wouldn't all the blitz people experience similar problems?

The injectors maxing out just doesn't make sense though. 1ZZ should easily cover 8 psi of boost...

What's the life expectancy on a fuel pump? Maybe Peter's is on its last legs?

I feel the Blitz guys are not have fuel issues cause they are only making 30-40 more HP than stock. Apparently the pump is OK till that point. Now the turbo guys are making 65-85 more HP & the pump is reaching it limits of fuel pressure & volume. The injector maxing out make perfect sense, the pump is running out of steam! It cant supply enough fuel for the demand the engine & injectors are requiring.

rob323 · 12-13-2010, 05:22 PM

Simple fix, block off the return, run max fuel pressure all the time that the pump can supply, run rich as hell and watch those injectors never get over 50% duty cycle

And keep a back up supply of fuel pumps in the glove box for when they give up the ghost.

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12-13-2010, 02:50 PM	#1
Focus_Sh1ft Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010 Location: New Jersey Posts: 875	I really think it's the fuel pump as well, but I can't offer any explanation as to why. Wouldn't all the blitz people experience similar problems? The injectors maxing out just doesn't make sense though. 1ZZ should easily cover 8 psi of boost... What's the life expectancy on a fuel pump? Maybe Peter's is on its last legs?

12-13-2010, 05:22 PM	#3
rob323 Don't drive it, RALLY it! Drives: 1999 echo PRC rally car Join Date: Oct 2008 Location: Joyner, Brisbane Posts: 321	Simple fix, block off the return, run max fuel pressure all the time that the pump can supply, run rich as hell and watch those injectors never get over 50% duty cycle And keep a back up supply of fuel pumps in the glove box for when they give up the ghost.