With great relief I can now trust the car to start whatever the weather. For instance, this morning it was an unseasonable -2C and after a slight hesitation it started no trouble. But you can hear that little popping sound which isn't there when hot-starting or at any stage when running.
Has anyone got any ideas of the cause because it annoys me.:bang:
The best I can find is that maybe there is a little surplus fuel in the intake or exhaust which seeped over when the engine was last turned off.

[ame]https://youtu.be/1NwVzhJdE5I[/ame]

Just sounds like a little backfire in the inlet to me?

I like the new remote starting btw

No human required!

Vitesse said:

I like the new remote starting btw

No human required!

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It's that alien again.
I think I need your fancy solenoid on the carb to stop my popping

Those windows look pretty fogged up, what's going on inside?

Doesn't sound like anything to worry about. Maybe try a little less choke when starting?
John

jjacob said:

Those windows look pretty fogged up, what's going on inside?

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It never crossed my mnd to use anythng less than full "fuel enrichment device."
So I'll give that a try today. Unfortunately, after the long buld-up of poor starting which eventually panned-out as the valve-seat problem. I've become even more sensitive to changes in the behaviour and noise of the engine.:bang::bang:

fiat500 said:

But you can hear that little popping sound which isn't there when hot-starting or at any stage when running.
Has anyone got any ideas of the cause because it annoys me.:bang:
The best I can find is that maybe there is a little surplus fuel in the intake or exhaust which seeped over when the engine was last turned off.

Click to expand...

I have a similar problem at the other end of my journey. When I turn the car off (after anything other than a very short trip) I get an almighty pop/bang from the exhaust about 2 seconds after the engine dies.

Letting the car sit idle for 30 seconds before turning the ignition off usually stops it happening, so I expect there's some fuel in there somewhere that just needs to burn off.

This started to happen after I extended my exhaust wrapping all the way up to the engine block.

jjacob said:

Maybe try a little less choke when starting?

Click to expand...

What wisdom! Maybe 60% choke and all's well.

I had this issue when I had a 28IMB fitted to my engine with a blocked return port. Went to a 26IMB and the pop stopped. The pop also stopped on the 28 when the engine warmed.