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- Xref: sparky rec.autos.tech:15669 rec.autos.antique:59
- Path: sparky!uunet!dtix!oasys!kiviat
- From: kiviat@oasys.dt.navy.mil (Brian Kiviat)
- Newsgroups: rec.autos.tech,rec.autos.antique
- Subject: Re: Triumph Spitfire idle problem
- Message-ID: <27713@oasys.dt.navy.mil>
- Date: 20 Nov 92 12:44:41 GMT
- References: <Bxw08q.D0@gabriel.keele.ac.uk> <2B0C1102.1516@news.service.uci.edu>
- Reply-To: kiviat@oasys.dt.navy.mil (Brian Kiviat)
- Followup-To: rec.autos.tech
- Organization: Carderock Division, NSWC, Bethesda, MD
- Lines: 15
-
- >SD Bateson (u1a70@keele.ac.uk) wrote:
- : 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
- : 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.
-
- You might want to check the slop in the throtle shaft (butterfly shaft)
- If it not in good shape, you might be drawing air in through the bearing
- assemblies at either end. I don't know the fix, but this might be the
- problem. It sounds as though you have a pretty hopped up motor, maybe
- some side draft Webers might be cool.
-
- Brian
- '67 Sunbeam Alpine
-