Do all the truck engines, or those with truck intake manifolds, have a vacuum regulated fuel pressure regulator? Our LS1 engines don't have the vacuum type fuel pressure regulators.
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Do all the truck engines, or those with truck intake manifolds, have a vacuum regulated fuel pressure regulator? Our LS1 engines don't have the vacuum type fuel pressure regulators.
I think they did away with the vacum regulator on the rail in 04??
<div class='quotetop'>QUOTE(RedHeartbeat @ Mar 21 2006, 05:21 AM) [snapback]47636[/snapback]</div>I can't speak for "all" but I have a 2002 5.3 in a Tahoe and a 2003 5.3 from a Silverado and both have a vacuum regulator on the fuel rail.Quote:
Do all the truck engines, or those with truck intake manifolds, have a vacuum regulated fuel pressure regulator? Our LS1 engines don't have the vacuum type fuel pressure regulators.
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The LS1 compensates for low vacuum and boosts the fuel output in the PCM. I wonder why the trucks do that the old fashioned manual way.
I opted for the 97 vette fuel rail with the vacuum regulator in it. Don't ask me why, I just did it.
<div class='quotetop'>QUOTE(RedHeartbeat @ Mar 21 2006, 08:21 AM) [snapback]47636[/snapback]</div>your 1997-1998 corvette and 1998 camaro/firebird had a dual line (return line) with anQuote:
Do all the truck engines, or those with truck intake manifolds, have a vacuum regulated fuel pressure regulator? Our LS1 engines don't have the vacuum type fuel pressure regulators.
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external fuel pressure regulator.
the 1999-2003 gneIII truck engines (4.8/5.3/6.0L) have an adjustable fuel pressure
regulator with vacuum regulation (5-8psi)
airdeano
<div class='quotetop'>QUOTE(airdeano @ Jun 7 2006, 11:03 PM) [snapback]54950[/snapback]</div>My '98 F-body engine doesn't have a dual line fuel rail. I believe it used a regulator at the fuel pump and a single line to the rail, but I won't swear to it.Quote:
your 1997-1998 corvette and 1998 camaro/firebird had a dual line (return line) with an
external fuel pressure regulator.
airdeano
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97-98 Corvettes are the only LS1 engines I know of with a feed and return line on the fuel rail. My (2) 98 T/A engines had a single inlet, also.