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- Xref: sparky rec.autos.tech:15747 rec.autos.antique:92
- Newsgroups: rec.autos.tech,rec.autos.antique
- Path: sparky!uunet!think.com!ames!saimiri.primate.wisc.edu!zaphod.mps.ohio-state.edu!rpi!scottv
- From: scottv@rs6321.ecs.rpi.edu (Vaughan K. Scott)
- Subject: Re: Triumph Spitfire idle problem
- Message-ID: <r#419q=@rpi.edu>
- Nntp-Posting-Host: rs6321.ecs.rpi.edu
- References: <Bxw08q.D0@gabriel.keele.ac.uk> <2B0C1102.1516@news.service.uci.edu>
- Date: Mon, 23 Nov 1992 19:31:32 GMT
- Lines: 60
-
- dparsons@plasma.ps.uci.edu writes:
-
- >SD Bateson (u1a70@keele.ac.uk) wrote:
- >:
- >: Hi everyone -
- >:
- >: Over the past few months I've been sorting out various problems with the
- >:
- >: latest old clunker that I saved from the scrapyard. The car is a Triumph
- >:
- >: Spitfire MKIII, but has been converted to rally spec, then allowed to
- >:
- >: degenerate somewhat. I've given the engine a tune-up, and after sorting
- >:
- >: out various elusive gremlins, got her running smooth, except for the
- >:
- >: idle.
- >:
- >: The engine is a 1300, probably running a stock cam etc, but
- >:
- >: with HS4 carburettors (From 1500 MKV Spit) and a Triumphtune 4-2-1
- >:
- >: manifold leading to a 2" straight through exhaust and silencer.
- >:
- >: Although it idles ok at first (at about 850-950 rpm), after about
- >:
- >: ten seconds the idle starts to fall, and the engine stalls, unless I
- >:
- >: rev it a bit. After another ten seconds of idling, the same happens.
- >:
- >: I'd really appreciate any help on this, as it's driving me mad,
- >:
- >: and continuosly blipping the throttle at traffic lights is making
- >:
- >: me a target for boy racers and their traffic lights grand prix....
- >:
- >: Thanks
- >:
- >: Simon Bateson
- >: Keele University
- >: England
- >:
- >My suggestion to you is to put a 289 in it. After all it's a triumph!
-
- Sounds to me like you got yerself some vacuum leaks. I have a couple
- TR-7's, and have had the same problem with the one on the road. I noted
- considerable improvement after resealing the intake manifold gasket (still
- gotta do the carb mountings). In other words, I recommend you take off the
- carbs, intake manifold, and rubber carb mountings, and reseal them with
- Ultra-Copper gasket maker by Permatex (though I don't know if you can get
- it over there). Good Luck!
-
- Vaughan Scott
- scottv@rpi.edu
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