ok my friend has an 89 hatch with a 91 ls motor in it i helped him do everything it has intake and running open header ok the motor runs fine but when he sprays it seems to be strong 1st 2nd and 3rd but in 4th it like putters out and loss of power and reason y that would be happening all help will be appreciated

 

bump

 

^

 

is it running lean on top end?

 

Running low on bottle pressure???? Maybe

 

not running low on bottle pressure

 

i dont know if its running lean no a/f gague

 

any thing else u can think of

 

up up up

 

one more time before bed

 

how big of a shot?
whats the timing set at?
what octane gas is he runnning?
what spark plugs is he running? what are they gapped at?

 

65 shot timing is set back 2degrees and 93 octane gas and im not sure about the spark plug hes running or what there gapped at what should they be gapped at

 

Well one thing is for sure is it isnt running rich or lean....the zex kits signatiure is that it adjust fuel according to how much bottle pressure you have. Does this problem only occur when on the bottle or does it do it on motor also?

 

the bottle pressure is at a little above 60 i think is that how it works or is it 600 something like that and no it doesnt do it all motor only on the bottle

 

up up up

 

bump bump bump

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TURBO B &raquo;</TD></TR><TR><TD CLASS="quote">the bottle pressure is at a little above 60 i think is that how it works or is it 600 something like that and no it doesnt do it all motor only on the bottle</TD></TR></TABLE>

bottle pressure abouve 60? i would hope so. when i had a zex kit my bottle pressure's were 850-1300. sometimes more sometimes less. depending on how full or empty it was at the time.
good luck with the zex.

 

ok well the bottle pressure is at 800 steady with a full bottle

 

The low botle pressure could be part of it. You can heat the bottle up with a heating pad on high if you're too poor for a bottle heater. Either that or leave the car parked in the sun for a while. Safe operating pressure is around 900-1200 psi.

Also, if you're getting all the way to 4th gear, you're probably going well over the recommended 15 seconds of spraying. Just something to remember if something blows in the motor

It wouldn't be a bad idea to compression test it, check the plugs, get a fuel pressure guage and regulator, and then go to a dyno with a wideband and make sure you aren't going way lean. An A/F guage is not much more than a light show for your guage pod

 

yeah we did a compression test it was fine a little to high for a stock ls 210 and yea i told him to get an a/f gauge