"vinnie" wrote in message
> hi can anyone help me i have a evo 1 a great car and really fast but when
> driving it on the top end it seems to hold off and loose power but when i
> take my foot off the accelarator and replace the power it starts all over
> again
OK, it sounds like you lose power soon after hitting the top end, and
backing off, then on restores the power. This is pretty typical of loss of
fuel pressure. This can be caused by several things.
a) your fuel filter is blocked .. replace it.
b) the fuel pump is cavitating ... try with more than 1/2 tank of gas.
c) the fuel pump is leaking inside the tank. There's an O-ring that
sometimes fails and causes loss of fuel pressure. Easy to fix but taking out
the fuel pump can be a bear.
Other issues to look at ...
d) The ECU is tripping the fuel cut-out / rev limiter. Sometimes caused by
O2 sensor or MAF sensor problems.
e) the turbo is losing pressure somewhere. Look for turbo hose leaks eg the
blow of valve, intake.
f) wastegate is flapping: check the WG solenoid arm is connected to the WG
lever.
Stewart DIBBS
www.pixcl.com/lancerproject.htm
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thanks
