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Rayberne

Slow Start

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Obviously better than the “no start” threads, but annoying (actually embarrassing) nonetheless. I experience lots of cranking before the engine fires, and very sensitive to throttle position. Unusual in my experience of FI systems. Is it a characteristic of this car, or shall I start some diagnostics?

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Are you starting the engine with your foot off the throttle?

The throttle position is not linear - the mechanism is designed to allow for fine control of the revs in the lower range.


1996 Esprit V8, 1998 Esprit V8 GT, 1999 Esprit S350 #002 (Esprit GT1 replica project), 1996 Esprit V8 GT1 (chassis 114-001), 1992 Lotus Omega (927E), 1999 Esprit V8SE, 1999 Esprit S350 #032, 1995 Esprit S4s, 1999 Esprit V8 GT (ex-5th Gear project), 1999 Esprit V8SE ('02 rear)

1999 S350 #002 Esprit GT1 replica

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Yes, by experimentation it is clear that the TPS plays with the start circuit. What’s the correct strategy? Foot completely off the throttle leads to long cranking, but if that is correct I will learn to live with it.

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No throttle required for starting.  With a fully charged battery, my experience is that the engine is bursting into life quickly.  It could be that your cranking is slower due to the battery.

Here is a recent first time start, after an engine rebuild.  The engine fires within a few seconds.

 

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1996 Esprit V8, 1998 Esprit V8 GT, 1999 Esprit S350 #002 (Esprit GT1 replica project), 1996 Esprit V8 GT1 (chassis 114-001), 1992 Lotus Omega (927E), 1999 Esprit V8SE, 1999 Esprit S350 #032, 1995 Esprit S4s, 1999 Esprit V8 GT (ex-5th Gear project), 1999 Esprit V8SE ('02 rear)

1999 S350 #002 Esprit GT1 replica

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OK, thanks. Then I shall embark on some diagnostics and testing. I would be quite happy if mine started that quickly.

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Does engine temp influence the amount of cranking time required?  (Does it take longer on a hot start?)

 

Could be fuel pumps (there are two)

https://www.lotustalk.com/forums/f164/v8-esprit-starting-problems-429866/

 

Could also be an issue with the fuel injectors. Take a look at Alan Swindon's cross-reference list, I believe that they cross to early-90s Cadillacs, but not sure.

 

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Atwell Haines

'88 Esprit

Succasunna, NJ USA

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Sorry to be obvious-but check the earth connections for cleanliness-I even added a second one (see the "hot start problems" thread. 

And the positive of course!

I have a motorbike and a common problem with the model is poor earth connections. once fixed the slow starting goes away totally-and these bikes are at least 15 years old so most have the problem to some degree.

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