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  1. C

    Vacuum at oil cap

    Ok, I just took the car for a drive with a new, proper oil cap installed. Here is what I noticed: 1.) Vac is still low. When put into drive, it looks to be 1-3" according to my gauge. 2.) Hammering it to 30mph or so, I seem to have more boost. It jumps above 5, and even broached 10psi...
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    Vacuum at oil cap

    Thanks alot for taking the time to reply in detail. The cap I am using is off a Mustang, so it does not fit properly. It will sit in the cover somewhat firmly, but just pops out and it does not seal. The low boost is really my main concern. The cam is a 224/230 (its been awhile, I may have to...
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    Vacuum at oil cap

    It idles around 800 right now. It doesn't tend to go up and down too much, but I have a big cam so it does lope quite a bit. It does not have a distinct popping noise. I have not yet checked timing, as the smoke test revealed some leaks I wanted to address first.
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    Vacuum at oil cap

    For your first point, is this enough of a leak to cause my vac readings to be so low?
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    Vacuum at oil cap

    40 views and no response? PLEASE HELP! Struggling here to get the car running right.
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    Vacuum at oil cap

    Maybe a stupid question but...I finally got my smoke machine put together and have a few small leaks here and there: 1.) TPS on the sensor side 2.) Throttle Body plate shaft (heard there is nothing you can do about this and it is more or less normal) 3.) Bypass valve shaft on the back of the...
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    Stephanie Mathews

    This person now goes by the user name artic94sc
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    Main Girdle

    The oil pan is one thing, the oil pickup was another. And again, I was told it was a 'bolt on and rock out kit'. Otherwise I would have gone with Morana. Oh, in addition to this, my flexible Lokar dipstick got caught between the girdle and the crank and snapped off. Nothing against you or your...
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    Main Girdle

    The oil pan won't clear and the fitment of the oil pickup tube is atrocious. /Enter Delk representative to scold me again/
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    RPM's fluctuate at higher speeds

    The cam sensor is new. Do you mean the sensor itself or the positioning of the sensor?
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    RPM's fluctuate at higher speeds

    I took the car out on the highway today and between about 50-75 mph, the rpm's act very strange. With almost constant pressure on the gas, the RPM's will jump up about 400 rpm, then back down. Then up, then down...etc It will go up, you can count to almost 2, then they jump back down. Any...
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    Vac leak at throttle body spring

    Its a 98 Mustang with a 94 SC motor. The brakes are spongy, I am assuming this is why cause I bled them 3 times!
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    Vac leak at throttle body spring

    I took the car out for about 30 minutes of driving yesterday. I observed that it was pulling about 10-11 inches at idle, and about 9 when shifted into drive. I can get into about 5 pounds of boost relatively easy, but I have not observed the gauge reading 0 since a few weeks back. I am yet to...
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    S/C eng in a 3.8 stang

    The IAC sensor also needs to be relocated from the passenger's side air inlet to the driver's side return plenum. You'll need the SC sensor for this also I believe.
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    Vac leak at throttle body spring

    Cool, I'll try increasing the idle. The gauge is an aftermarket Autometer full sweep electric, so not sure if it would be prone to sticking.
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    Vac leak at throttle body spring

    Dave, Thanks for chiming in. I idle consistently at about 800-850. This is good to know though that you have a similar vac condition. The only thing that I question is sometimes I will be sitting at a light and my vac gauge will read close to 0. This hasn't happened for a few days, so maybe I...
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    S/C eng in a 3.8 stang

    You can run the Mustang computer with no issues. EDIT: ^^^^Victor is a great source of info on this :)
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    Vac leak at throttle body spring

    For the first 30 miles or so it was sitting at around -16. Sometimes during the drive, while sitting at a stoplight, I'll be at almost 0. I did not check lifter preload, so that is a possibility. Although, I still lean towards vacuum because the car sometimes will die when I put it in reverse...
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    S/C eng in a 3.8 stang

    I just did this swap, and there is a world of info out there for it. I would check http://www.v6power.net. Its not a very difficult swap, but you do need to extend some wiring and massage some items.
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    Vac leak at throttle body spring

    The motor is brand new, has less than 100 miles on it. Its a 4.3L stroker bored .050 over, with a 224/230 cam. So definitely not stock. It was making higher vacuum for the first 30 miles or so, and now at idle I sit right below -10 on the gauge.
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