Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: Paul99 on June 14, 2023, 14:46:28

Title: 230SL Hot start fiddle.??
Post by: Paul99 on June 14, 2023, 14:46:28

My 230 starts perfectly cold, and in the winter starts hot not too badly, but now we have some VERY hot weather (rare in the UK I know!) the other day with the car in the sunshine it started for a second, then just cranked and cranked. (perfect spark).   Seems the fuel injection system runs out of fuel and wont "prime".   Suggestion is to "fiddle" the cold start unit so it will inject a fuel shot (or 2) even when hot to help it "prime"once the cold start squirt of fuel starts the engine.

So, anyone know how to do this with the cold start unit?   

Alternative is that the non return valves in the injection unit need to be replaced, but the parts are like hens teeth but not as easy to find ??? Anyone know the part numbers?

Any suggestions very welcome! 

Many thanks.

Title: Re: 230SL Hot start fiddle.??
Post by: Mike Hughes on June 15, 2023, 01:47:04

Cold or hot, I find that turning the ignition on and letting the fuel pump pressurize the lines for about 15-20 seconds, then turning it off and turning it back on again and cranking works pretty well. 

Title: Re: 230SL Hot start fiddle.??
Post by: ctaylor738 on June 15, 2023, 03:26:57

On some cars, flooring the gas pedal while cranking will get the engine going.

Cheers,

CT

Title: Re: 230SL Hot start fiddle.??
Post by: Paul & Dolly on June 15, 2023, 07:15:48

I let the fuel pump prime for ablout 10 secs before cranking .

Paul

Title: Re: 230SL Hot start fiddle.??
Post by: jackmc on June 23, 2023, 03:37:55

Perhaps related to my issue.

Just started a “Fuel issue on hot start” thread. Hopefully between the two we can both get going again.  8)