(FUEL) Mallory Issues: Part Deux

 
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Old Jul 9, 2007 | 12:39 PM
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(FUEL) Mallory Issues: Part Deux

Alright, thanks to the suggestions from my first thread regarding this issue I was able to get the fuel pump mounted correctly (hopefully) and I installed the Mallory FPR as well. I actually got the thing to move! I drove it about 10 miles back to base and parked it in my barracks parking lot. Now of course there is a slew of other issues that have arisen now.

One - It stumbles and catches when I step on the accelerator more than half throttle. I am thinking this is related to the fact that I have not adjusted the FPR at all. I guess I need some type of PSI guage to see what pressure its running at. I am going to read over the instructions again but I didnt see anything the first time about what it is supposed to be set at.

Two - After I got everything installed and running I was sitting there looking at this little plastic bag that had a brass spacer looking thing in it. So I read through the FPR instructions one last time and apparently I have to put this in my fuel pumps bypass plug line or something. Maybe this is why I am stumbling?

Three - It backfires everytime I stop! AGH! Scared me the first time, thought I had blown my exhaust up. I talked to another first gen owner from around here about this and he said its normal? I dont like it though, any insight?

Four - Damn thing idles high, around 2k. Could this be throttle cable adjustment? I know nothing about this damn holley carburetor or how to adjust it. I also havent had a chance to adjust the float levels, I am sure that is not helping.

Any advice is appreciated.

For those that didnt catch my first thread.
1985 base model. 12a, racing beat full intake,and full exhaust.
Old Jul 9, 2007 | 01:45 PM
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You definitely need to get a gauge and set your fuel pressure, then see what problems are left after that.

If you think the throttle cable adjustment is causing issues, then just temporarily remove the throttle cable, tap the linkage with your finger to make sure it's "shut" and see what that does.

But at least now the pump sounds like it's working, just get your pressure in the right spot and you'll be good.

Jon
Old Jul 9, 2007 | 02:51 PM
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I will try that with the throttle cable, thanks for the tip.

One more thing, Is the fuel pump supposed to be noisy? Since I have it mounted to the underside of the drivers side storage bin I can hear it whining at low speeds. Also it gets rather warm, not nearly as hot as it was before where I couldnt even touch it without burning myself. I can hold my hand on it but it is definetely warm.
Old Jul 9, 2007 | 03:16 PM
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I can't hear mine at idle unless I'm rummaging around in the bin behind my seat with the car on, or squatting down beside the car. MAYBE sometimes at night, that's about it.

I've got the Mallory Comp 70 though, I don't know if yours would make more noise, I don't see why it should.

Yeah the pump gets a little warm, but nothing big. Mine does the same.

What do you have for exhaust? Maybe I only can't hear mine because I have the RB long primary exhaust system

Jon
Old Jul 10, 2007 | 01:47 PM
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Is there any way to adjust the fuel pressure regulator without a guage short of changing it then taking it for a drive over and over?
Old Jul 10, 2007 | 02:02 PM
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not without a gauge. Bite the bulllet and get one.
Old Jul 10, 2007 | 03:33 PM
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Agreed.

Get the one from ReSpeed. It goes up to 10psi (good enough for your application) and it's probably the most accurate fuel pressure gauge I've seen.

Jon
Old Jul 11, 2007 | 07:15 AM
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link? not sure what respeed is, still new to the aftermarket 7 scene.
Old Jul 12, 2007 | 10:04 AM
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Get your Mallory off the Storage Bin and install it Here.
I'm running the 140 and I never hear it.
And invest in a Good Reg and Gauge!!!
sgieldon
steve
Attached Thumbnails (FUEL) Mallory Issues: Part Deux-fuelpumppict0141resized.jpg   (FUEL) Mallory Issues: Part Deux-fuelpumpresizedpict0142.jpg   (FUEL) Mallory Issues: Part Deux-pict0007newaeromotive.jpg  
Old Jul 12, 2007 | 10:53 AM
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www.re-speed.com
 
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