LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Fuel System

Old Jul 13, 2010 | 03:33 PM
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Fuel System

Ok this camaro in my signature is the one im working on, its old and poorly taken care off. Only thing solid on it is the engine which was swapped. So anywho I plan on swapping out parts that appear to be worn or are known to wear faster then others. My question is this I found this kit for the fuel...

http://www.summitracing.com/parts/AEI-17102/

I like the way it looks and I know its a upgrade from the stock for sure, Im pretty sure Ill need new injectors to match. Anyways is this doable? Is it worth the time and money? Or should I start somewhere else?

Im new to anything that goes beyond a basic tune up, oil change, spark plugs, or swapping parts. So please take it easy..
Old Jul 13, 2010 | 04:27 PM
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Stock system works great for a stock engine. Don't waste your money there go to something else. Upgrade the fuel system when everything else warrants it.
Old Jul 13, 2010 | 04:32 PM
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Maybe elaborate on where to start then??

Aside from common sense parts...tires, rotors, pads, struts & coil springs, cold air intake, etc.
Old Jul 13, 2010 | 04:44 PM
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Totally unnecessary. Stock style fuel filter, stock fuel pressure regulator are fine for a "stock" application. In fact, many people have had major failures with the Aeromotive LT1 adjustable fuel pressure regulator. Hard to understand why, when Aeromotive make so many high quality fuel system components, but the AFPR is highly questionable.

Stock fuel pump is also more than adequate for a stock application. Have you checked the fuel pressure out on the road, under maximum load/maximum RPM? If the fuel pressure stays within spec under those conditions, you have nothing to worry about.

If you are concerned about the fuel system, and you know the injectors are high mileage, consider replacing them or having them cleaned and flow tested.
Old Jul 13, 2010 | 04:52 PM
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Well I had all the fuel injectors cleaned, and i checked them for leaks by lifting them from where they sit and looking for drips with the pump primed they were fine as to what i could see. The pressure I havent got a chance to check just yet, but I had thought to change the pump simply because im having to prime the car like 2-5 times and then start to get a nice quick start. So the idea really is any parts that need replacing, i would just buy a nice aftermarket replacement and start building up 4rm wherever really. Just dont know where to start
Old Jul 13, 2010 | 08:10 PM
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Originally Posted by Chaos1187
but I had thought to change the pump simply because im having to prime the car like 2-5 times and then start to get a nice quick start.
That's fine if you have a check ball problem. But the pump you pointed out doesn't have any type of check valve. And the inline type ( I tried 2 different types) never worked.

Stick with stock.
Old Jul 13, 2010 | 10:06 PM
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Yes I understood that with the other posts (above). I also asked twice where a good place to start would be (above). Thanks for all the input so far.
Old Jul 13, 2010 | 10:26 PM
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You need to check your fuel pressure before you make any changes. This will point toward a possible source of the reason it takes 2-5 times to prime the pump before it starts. It should prime to around 42 psi (give or take). If it does, and holds for a period of time, you have another issue. And an underhood or handheld fuel pressure gauge is a lot cheaper than an aftermarket pump.
Old Jul 14, 2010 | 01:09 AM
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Originally Posted by Chaos1187
Yes I understood that with the other posts (above). I also asked twice where a good place to start would be (above). Thanks for all the input so far.
This was answered for you in Injuneer's first post.
Old Jul 14, 2010 | 05:27 AM
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I guess he doesn't like my answer..... I'll move on to someone else's posts.
Old Jul 14, 2010 | 08:46 AM
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Originally Posted by Injuneer
I guess he doesn't like my answer..... I'll move on to someone else's posts.
No no no Injuneer I appreciate your help and everyone elses, I need to clarify what I mean Ive never been the best at grammar and all that. What Im trying to say is what parts should be good to check, what parts should need attention, what parts should be changed, and in the process of doing this i wanna be rebuilding the car with performance parts etc. The car is 15 years old and the PO, obviously just ran out of money or didnt have the money to maintain this car.

The fuel pump was a good example as it needs to be changed more then likely. I will be checking on it later on today to see if it does in fact hold pressure which Im pretty sure that it does not. So i figured if I need to change it might as well put a nice one or performance one if available.

Im so sorry for the confusion on that. Thank you again everyone.
Old Jul 14, 2010 | 11:28 PM
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Okay so the fuel pump didn't hold pressure. Needs to be replaced. Any recommendations? Also what's a nice MAF sensor to add a little power? Or should I change a different part first?
Old Jul 15, 2010 | 12:11 AM
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Originally Posted by Chaos1187
Okay so the fuel pump didn't hold pressure. Needs to be replaced. Any recommendations? Also what's a nice MAF sensor to add a little power? Or should I change a different part first?
There is no benefit to switching to an aftermarket MAF, nor is it needed. Some of the aftermarket MAFs actually are a pain in the *** to tune. Just stick with the stock one.
Old Jul 15, 2010 | 12:42 AM
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ive cracked over 600rwhp on stock lines... your stock pump will go along way...

gears
exhaust (including long tube headers)
converter (if your an auto)
free mods (use the search option for these)
throw some nitrous at it and go 12's... you are welcome.
Old Jul 15, 2010 | 04:51 AM
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Originally Posted by Chaos1187
Okay so the fuel pump didn't hold pressure. Needs to be replaced. Any recommendations? Also what's a nice MAF sensor to add a little power? Or should I change a different part first?
Before you begin considering changing any other parts, you need to fix the pressure first. It may take more effort or parts than you think. For example, are you sure it is the pump? Are you sure it is not the FPR? What makes you think this? If you change the pump, what are you going to put in? A stock replacement? A Walbro? A Racetronix with a wiring harness? Which decision did you make, and why?
Once the pressure is steady, it cranks easily, and you are happy, then ask the next question. One step at a time.

Last edited by koolaid_kid; Jul 15, 2010 at 04:53 AM.

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