Massive Explosion!
06-20-2002, 06:02 PM
#1
Three Wheelin'
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Massive Explosion!
I know my timing is dead on, because I checked and it pulls right through all the way to redline, but when I come down from 5th 4th or now 3rd and 2nd gear it will decelerate for a while and then KABOOM backfire very loud, but just once. Then it'll decelerate normally again for a while and then another KABOOM. Usually happens when I come in around above 3K and then it will be fine from below 2.5K rpm. Could this be the deceleration valve? <img src="confused.gif" border="0">
06-20-2002, 07:45 PM
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That would make sense. Could this have to do with the every now and then it'll stutter when it's accelerating. Or the kinda gasoliny smell from when I turn on the heat that wasn't there before?
06-21-2002, 01:39 AM
#5
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"In the old days" we would turn off the ignition while decelerating and then turn it back on after it loaded with gas. Big Bang. Cost one or 2 mufflers, but I've always liked loud cars. <img src="graemlins/burnout.gif" border="0" alt="[burnout]" />
So my thought: Is the ignition cutting out? It might be 'flickering' off then on.
DanD
So my thought: Is the ignition cutting out? It might be 'flickering' off then on.
DanD
06-28-2002, 04:06 PM
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Assuming you have FI. Check your vacuum line. Your 914 is running rich. The problem is in your fuel pressure regulator. It is not functioning. That is why you have a loud bang when you decelerate. Also, check your deseleration valve for proper operation
06-29-2002, 05:38 AM
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So on the check list is:
Exhaust leak (haven't found one yet)
noticed that timing is off AGAIN! damn it.
Fuel pressure regulator (how would I do this?)
Deceleration valve (how to check that?)
<img src="confused.gif" border="0">
Exhaust leak (haven't found one yet)
noticed that timing is off AGAIN! damn it.
Fuel pressure regulator (how would I do this?)
Deceleration valve (how to check that?)
<img src="confused.gif" border="0">
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06-29-2002, 06:19 PM
#8
Three Wheelin'
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definete exhaust leak
I hooked up a fuel pressure gauge, and behind the pressure regulator it reads 53 PSI regardless of RPM so I think that's good. When I press the relief vavle on the gauge the engine will speed up and the guage drops to 40 PSI. Also it holds the 40 PSI for a couple of minutes after the car shut off.
I adjusted the timing and I think the car is running allright.
But now there is black smoke when I rev the engine coming from the exhaust. What the &$^#! I'm starting to get a little frustrated with me engine. Don't make me put in a 6!
Well any suggestions are welcome as ususal.
Thanks guys <img src="graemlins/cussing.gif" border="0" alt="[grrrrrrr]" />
<img src="confused.gif" border="0">
I hooked up a fuel pressure gauge, and behind the pressure regulator it reads 53 PSI regardless of RPM so I think that's good. When I press the relief vavle on the gauge the engine will speed up and the guage drops to 40 PSI. Also it holds the 40 PSI for a couple of minutes after the car shut off.
I adjusted the timing and I think the car is running allright.
But now there is black smoke when I rev the engine coming from the exhaust. What the &$^#! I'm starting to get a little frustrated with me engine. Don't make me put in a 6!
Well any suggestions are welcome as ususal.Thanks guys <img src="graemlins/cussing.gif" border="0" alt="[grrrrrrr]" />
<img src="confused.gif" border="0">