re: Stumbling GTV6 below 3500 rpm

["Sedon, Doug (OD/ORS)" <sedond@domain.elided>]

hi brian, you said:
>I have a 85 GTV6 Callaway. It has developed the following characteristics:
>1) Starts harder than it did prior to the problem.
>2) Idle appears low and uneven.
>3) Once warm it has a pronounced stumble and occasional backfire until the 
>rpm's exceed 3500. After that point it appears to operate fairly normal but 
>with somewhat less power.
>
>I have checked electrical items, throttle linkage, and fuel (as best as I 
>could). I am at a loss and am looking for suggestions. The mechanic I use is 
>quite a way away so I would have to trailer it to his place if I can't find 
>the problem.
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dint see much of a response, so here's my shot - you may have an air leak
somewhere on the intake side of the system.  a problem specific to the callaway
turbos is the thin stainless steel accordion-type bellows - they are wery prone
to breakage.  dunno if callaway still stocks 'em, i'd hope so - i sold quite a
few of 'em back in '89-'90, when i was materials mgr there!

good luck,

doug s

Brian Beckham

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