Nothing left to check? VP 5.7GSI wont start - good fuel pressure, good ecm, wiring
#241
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Yes its a VP 4.3 injector but it was also used in automotive side up to a 454 the big issue with this injector it was used with 30psi.I f you think about it its simple and cheap to use one injector for a entire line of engine's from a 4.3 to a 7.4....its just as simple to merely up the pulse width to the approiate engine size or fuel demand until it goes static of course. Now if that sound crazy the factory VP 4.3 uses the 454 throttle body...and single plane manifold figure that one out. I know the injetors in my 4.3 are 454 injectors i had them flow tested year's ago and the tech shook his head when i told him they came out of 4.3
SB - I have no problem paying for them, but can you get them? I could try locally if you would like.
#242
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NAPA tells me the TJ 17's are three days away, so next week. I could overnight them from Rock Auto if SB doesn't have a source.
The one other solution is to find a carburetor that has a TPS port on it, if they exist. Then I could still let my computer do the timing, but the carb deliver the fuel. Unless this is a bad idea. It would really be a last resort.
The one other solution is to find a carburetor that has a TPS port on it, if they exist. Then I could still let my computer do the timing, but the carb deliver the fuel. Unless this is a bad idea. It would really be a last resort.
#243
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Nope. Nothing thru my warehouses. A GB reman but in VA. Those Napa's are in VA too (different warehouse) but aren't the TJ17's...just a NAPA brand that cross's, and they are doing a poor job of crossing.
Even way back I only had few sets of the 94-95 Truck 7.4L injectors to turn around.
Even way back I only had few sets of the 94-95 Truck 7.4L injectors to turn around.
#245
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Looks like Amazon has the TJ17's. You a Prime Member ? Next day / 2nd Day will be cheap.
http://www.amazon.com/Standard-Motor...=Standard+TJ17
http://www.amazon.com/Standard-Motor...=Standard+TJ17
Last edited by SB; 05-20-2015 at 02:35 PM.
#246
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Fixed the link above.
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A solution for you if the 17's dont work. You can call OBD daig @ 888-469-3274 tell them you delima they can recommend you a new injectors and then change the mefi program to give your engine the right calibration...this will also require a variable fuel pressure regulator and SB should be all over that. As to the TJ17 and 50 lb injectors...that rating comes at 13lbs not 30lbs so @ 30 it will be much higher ....now the question is will the TJ 17 again be able to hold and run @30lbs..
To be, or not to be, that is the question—
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The Slings and Arrows of outrageous Fortune,...
To be, or not to be, that is the question—
Whether 'tis Nobler in the mind to suffer
The Slings and Arrows of outrageous Fortune,...
#248
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Good call on Amazon Prime. Not sure why I didn't check there before. I will order them tonight. If they don't work I can probably return them anyway, they are listed for a generic VP 5.7 TBI. My engine fits under that generic description.
TG - If the TJ 17's can hold pressure then maybe OBD can just program those to work. I just cant believe how complicated this got.
TG - If the TJ 17's can hold pressure then maybe OBD can just program those to work. I just cant believe how complicated this got.
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Good call on Amazon Prime. Not sure why I didn't check there before. I will order them tonight. If they don't work I can probably return them anyway, they are listed for a generic VP 5.7 TBI. My engine fits under that generic description.
TG - If the TJ 17's can hold pressure then maybe OBD can just program those to work. I just cant believe how complicated this got.
TG - If the TJ 17's can hold pressure then maybe OBD can just program those to work. I just cant believe how complicated this got.
http://www.ebay.com/itm/High-Pressur...-/290984934136
I believe thats the original gm injector
17104288
http://www.fuelinjector.citymaker.co...89/5392061.htm
http://www.rockauto.com/catalog/rafr...ktemplate=true
http://fuel-injector.dvautoparts.com...w-krirqmrlmjlo
http://www.marinepowerservice.com/Bo...200K261160.cfm
• 13
852956A1 INJECTOR KIT $849.45 in stock
http://www.ebay.com/itm/301310154226?rmvSB=true
And im out....but i to have some injectors in route now....
Last edited by Tail_Gunner; 05-20-2015 at 03:48 PM.
#250
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http://www.ebay.com/itm/High-Pressur...-/290984934136
I believe thats the original gm injector
17104288
http://www.fuelinjector.citymaker.co...89/5392061.htm
http://www.rockauto.com/catalog/rafr...ktemplate=true
http://fuel-injector.dvautoparts.com...w-krirqmrlmjlo
http://www.marinepowerservice.com/Bo...200K261160.cfm
• 13
852956A1 INJECTOR KIT $849.45 in stock
http://www.ebay.com/itm/301310154226?rmvSB=true
And im out....but i to have some injectors in route now....
I believe thats the original gm injector
17104288
http://www.fuelinjector.citymaker.co...89/5392061.htm
http://www.rockauto.com/catalog/rafr...ktemplate=true
http://fuel-injector.dvautoparts.com...w-krirqmrlmjlo
http://www.marinepowerservice.com/Bo...200K261160.cfm
• 13
852956A1 INJECTOR KIT $849.45 in stock
http://www.ebay.com/itm/301310154226?rmvSB=true
And im out....but i to have some injectors in route now....