symptoms of bad fmu?
11-13-2003, 11:10 PM
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symptoms of bad fmu?
just curious to know what type of problems exist due to a defective/bad fmu. what should i look for? no noticable fuel leaks. im currently using a vortech 12:1 fmu.
11-13-2003, 11:59 PM
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Re: symptoms of bad fmu? (SIK IN DA HED)
Rich at idle... (low idle, black smoke)
Hesitation at the transition from vacuum to boost (a symptom of all FMUs really)
If you have a fuel pressure gauge - erratic fuel pressure when not in boost...
Hesitation at the transition from vacuum to boost (a symptom of all FMUs really)
If you have a fuel pressure gauge - erratic fuel pressure when not in boost...
11-14-2003, 08:47 AM
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Re: symptoms of bad fmu? (SIK IN DA HED)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SIK IN DA HED »</TD></TR><TR><TD CLASS="quote">just curious to know what type of problems exist due to a defective/bad fmu. </TD></TR></TABLE>
Mmm.. blown engine?
Mmm.. blown engine?
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11-14-2003, 07:22 PM
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Re: symptoms of bad fmu? (Chrome Pipes)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chrome Pipes »</TD></TR><TR><TD CLASS="quote">One experience I have had was leaning out due to a broken diaphram. </TD></TR></TABLE>
i figured the diaphram might be the reason why im leaning out at WOT. from most of the responses ive gotten, i assumed that if the diaphram was bad, it would leak fuel. so did u just replace the diaphram? how much does it cost?
i figured the diaphram might be the reason why im leaning out at WOT. from most of the responses ive gotten, i assumed that if the diaphram was bad, it would leak fuel. so did u just replace the diaphram? how much does it cost?
11-14-2003, 07:24 PM
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Re: symptoms of bad fmu? (VTC_CiViC)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTC_CiViC »</TD></TR><TR><TD CLASS="quote">
Mmm.. blown engine?</TD></TR></TABLE>
from the way my car has been runnin... im not surprised if my motor is in worse shape because of the dang fmu.
Mmm.. blown engine?
</TD></TR></TABLE> from the way my car has been runnin... im not surprised if my motor is in worse shape because of the dang fmu.
bump
11-18-2003, 07:44 AM
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how would the fmu cause the car to lean out at WOT? not adjusting the spring to compensate for more fuel? im wondering why some ruptured diapraghms leak fuel and why it wouldnt.
11-18-2003, 07:49 AM
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Re: (SIK IN DA HED)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SIK IN DA HED »</TD></TR><TR><TD CLASS="quote">how would the fmu cause the car to lean out at WOT? </TD></TR></TABLE>
Ruptured disc, won't sustain pressure. Fuel pressure goes down, fuel delivery goes down... motor go bOOm!
Ruptured disc, won't sustain pressure. Fuel pressure goes down, fuel delivery goes down... motor go bOOm!
11-23-2003, 01:39 PM
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Re: (VTC_CiViC)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTC_CiViC »</TD></TR><TR><TD CLASS="quote">
Ruptured disc, won't sustain pressure. Fuel pressure goes down, fuel delivery goes down... motor go bOOm! </TD></TR></TABLE>
eek!
Ruptured disc, won't sustain pressure. Fuel pressure goes down, fuel delivery goes down... motor go bOOm!
</TD></TR></TABLE>eek!
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