YW Sin Posted July 5, 2004 Share Posted July 5, 2004 My Seven has developed a new interesting bad habbit. After driving for a while, the engine won't start untill it has cooled down a bit. Anybody knows what may be bugging my seven? Link to comment Share on other sites More sharing options...
I.Mupferit Posted July 5, 2004 Share Posted July 5, 2004 Is the starter cranking the engine or is it not even turning it over when hot 🤔 Brent Zetec 209 Reassuringly Expensive Link to comment Share on other sites More sharing options...
Ken Sailor Posted July 5, 2004 Share Posted July 5, 2004 Assuming the starter motor is turning the engine over - could it be fuel vaporization? Ken Sailor Link to comment Share on other sites More sharing options...
Graham Perry Posted July 5, 2004 Share Posted July 5, 2004 They all do that ☹️ Mine nearly wouldn't restart at Emeralds last week when we stopped it when it was hot on the rolling road. Its one of the drawbacks of crossflows with carbs. Link to comment Share on other sites More sharing options...
YW Sin Posted July 5, 2004 Author Share Posted July 5, 2004 The starter is turning alright, just that it won't fire up. Mine didn't used to do that before. I suspect worn-out battery and when cooling fan is on, it may not have enough juice for ignition? Link to comment Share on other sites More sharing options...
Ken Sailor Posted July 5, 2004 Share Posted July 5, 2004 If the starter moter is turning over okay then it's unlikely to be the battery. I don't think the ignition circuit should be affected by heat all of a sudden. You could check for a spark at the plugs by pulling off a lead and holding it near the plug tip when you try to start the engine. Gloves or ? so you don't short-circuit your pace maker. Ken Sailor Link to comment Share on other sites More sharing options...
Tyrone Posted July 6, 2004 Share Posted July 6, 2004 I've only experienced this once on a very warm day and it was down to fuel evaporation. 10-12 pumps on the loud pedal sorted it. Link to comment Share on other sites More sharing options...
deanteam Posted July 6, 2004 Share Posted July 6, 2004 Is it running lean with a little too much advance? You could perhaps check the colour of the plugs. You could try pumping the throttle but then leave closed throttle as you try to start. Link to comment Share on other sites More sharing options...
YW Sin Posted July 6, 2004 Author Share Posted July 6, 2004 Carbs and ignition timing is well tuned by Redline and the car is runing better than ever. I will try to pump the pedal a few time next time. Hope I won't flood it! Link to comment Share on other sites More sharing options...
se7enmad Posted July 6, 2004 Share Posted July 6, 2004 I would'nt pump the throttle 12 times unless you want a nice big fire 😳 Keep the loud pedal fully depressed while cranking... it won't flood that way unless you've already flooded it..... then you just have to wait and try again. Antonella 1998 Caterham Classic my site here more photos here Link to comment Share on other sites More sharing options...
YW Sin Posted July 6, 2004 Author Share Posted July 6, 2004 Thanks Antonella! I thought the same Link to comment Share on other sites More sharing options...
se7enmad Posted July 6, 2004 Share Posted July 6, 2004 unfortunately have some experience with sticky throttles, carbs dripping on exhausts and fire 😳 ☹️ Antonella 1998 Caterham Classic my site here more photos here Link to comment Share on other sites More sharing options...
Asklepios Posted July 6, 2004 Share Posted July 6, 2004 Prob of no interest ,but my old Hailwood Ducati developed a week cylinder when hot, poor starting ,kickback (fractured metatarsal), and I could not determine the cause. Even checked the resistance in the coils but NAD. eventually switched coil to other cylinder and the problem followed. The coil was going off and this (apparently) is brought to the fore when coil became hot (sits above cylinders). So.................good luck! Link to comment Share on other sites More sharing options...
Tyrone Posted July 7, 2004 Share Posted July 7, 2004 I must have used little pumps for a change 😬 Link to comment Share on other sites More sharing options...
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