I'm having difficulty starting intermittingly when hot on my 1992 190E 2.6. It has new plugs, wires, dist cap, and rotor. It starts fine when cold. I can't find specific help for these symptoms. Can anyone help.

You have leaking fuel injectors which are flooding your engine.

Drains off by time engine is cold, and besides cold starting requires rich mixture in any event.

Verify by holding down accel pedal when cranking.

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Kent Christensen
Albuquerque
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
Two BMW motorcycles

Is the idle rock solid when warm and in Neutral or does it wander up and down?

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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....

Every MBZ I have owned up to the mid 90s has stated in the manual that in some cases you must slightly depress the gas pedal when starting warm. Does that help, or does it still hesitate to start hot even when doing this?

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08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280

that's probably your fuel accumulator down near the fuel pump. it's there to maintain pressure in the fuel system, cold starts are fine because the cold start valve squirts fuel in to get the engine started.

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1987 300e manual 250,000 km (sold)

There are several causes of hard starts hot.

The above can all cause the problem, but you should also take a look at the condition of injector seals, idle control valve hoses, and the boot between the fuel distributor air horn and the throttle body.

Air leaking in that does not go through the air meter venturi will cause hot start problems, typically a start and immediate stall (extra fuel when cranking). If you also have rough idle or variable idle speed, check for vac leaks (including all the vac operated things like climate control and tranny shift modulator. Occasional stalls while decelerating, especially abrubtly, are indicative of a leak.

If it is otherwise running well, suspect a bad accumulator -- this will permit vapor lock.

A bad fuel pump relay and/or bad over-voltage protection relay can also cause hot start problems -- the hot relay is intermittant, and you have either no fuel or no ignition momentarily. If you have occasional stalls while driving, it's the fuel pump relay or pump

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!