Fuel pressure/mixture adjustment? - Reply to Topic
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Topic Review (Newest First)

  • 29-04-2009, 11:44
    Plumpcars
    Quote Originally Posted by Gary Mc View Post
    OK I am guessing here as I don't know what type of gauge you have.

    But IF

    It is a liquid filled one, moon or similar and the reading goes wobbly on you, before you start swapping pumps etc there is a rubber plug on the side. It is a kind of blanking grommit. Pull it out and a bit of the magic juice that is in there will ooze out and all will be good.

    If your gauge is not that type then ignore what i said.

    G
    Gary, just done that with my Moon gauge. How much juice to you let escape? Sure mine would empty itself if I let it!
  • 28-04-2009, 07:38
    langy
    To be honest Gary a Facet Red top would work with your engine and you wouldn't need the reg.
  • 27-04-2009, 23:57
    mikeyboy
    Quote Originally Posted by English Impala View Post
    Problem is its a mid 90's Vortec engine & the cam doesn't have a lobe for a mechanical pump (I found out the hard way.....). The engine is an "M" series 305 which puts out 260bhp from the factory, so for a 305 its reasonably powerful.
    Oh I see..
  • 27-04-2009, 18:12
    English Impala
    Quote Originally Posted by mikeyboy View Post
    Just install a stock mechanical fuel pump and forget about it.Large volume electric fuel pumps are a waste of time on a chevy unless you have a ton of horse power which your 305 wont have.
    Problem is its a mid 90's Vortec engine & the cam doesn't have a lobe for a mechanical pump (I found out the hard way.....). The engine is an "M" series 305 which puts out 260bhp from the factory, so for a 305 its reasonably powerful.
  • 27-04-2009, 17:03
    mikeyboy
    Just install a stock mechanical fuel pump and forget about it.Large volume electric fuel pumps are a waste of time on a chevy unless you have a ton of horse power which your 305 wont have.
  • 27-04-2009, 15:31
    Plumpcars
    Quote Originally Posted by Gary Mc View Post
    OK I am guessing here as I don't know what type of gauge you have.

    But IF

    It is a liquid filled one, moon or similar and the reading goes wobbly on you, before you start swapping pumps etc there is a rubber plug on the side. It is a kind of blanking grommit. Pull it out and a bit of the magic juice that is in there will ooze out and all will be good.

    If your gauge is not that type then ignore what i said.

    G
    Interesting tip. Thanks Gary, must check mine now.
  • 27-04-2009, 13:58
    58 delray
    glad you got it sorted gary, i was starting to worry there for a moment,

    andy
  • 26-04-2009, 18:40
    English Impala
    About the only thing that my dad told me that I ever listened to was that manners & politeness costs nothing, but goes a long way!

    The strange thing is that I am 99% sure that before we went away a couple of weeks ago (when the car was running fine) the fuel pressure was around 5 psi. On returning home it was just over 8psi & running as rich as they come??? Maybe those damned flesh-eating spiders have started adjusting my pressure regulator as well! Just wish I could train them to fit headlinings!
  • 26-04-2009, 17:27
    kapri
    Quote Originally Posted by English Impala View Post
    Pressure wound down to 4 psi, new filter fitted, sorted! Thankyou.

    Gary, nic eof you to come back and confirm that it works. Ther are often conversations in tech sections about the merits of different psi pumps, good to see real world results.
  • 26-04-2009, 16:41
    bigyellataxi
    Cool, can I carry on washing up now???

    Do you want that blokes number re the bonnet???





    Quote Originally Posted by English Impala View Post
    Pressure wound down to 4 psi, new filter fitted, sorted! Thankyou.
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