260e wont go

[supercharger]

hi guys any ideas on this one just acquired a 260e w124 series courtesy of this forum but it wont go.
it will spin over and try to fire but just wont catch eventually battery dies.
tried the coil ,icu,removed and cleaned all plugs several times there,s a spark but just wont go there is fuel at the metering head as i cracked the two 17mm nuts and got wet lol.
any ideas guys.


supercharger

 

[Richard Moakes]

It could be many things, but here goes....

Fuel pump relay
Crankshaft rotation sensor
EZL module
Fuel pressure (may not be sufficient to open injector pintle valves)

Are the plugs wet with fuel when you have tried to start it? I have tested this kind of thing with Easy Start sprayed into the air intake, but you have to be careful as it's pretty dangerous stuff.

Does it catch and then die when you release the key to the normal 'run' position? If so then I would be pretty sure its your fuel pump relay.

Good Luck,

Richard

 

[type49]

Removed distributor (3 allen key bolts). If it's full of green corrosion, replace cap & arm or at least try cleaning them. Dont buy a cheap n cheerfull replacement though, that will be just as bad.

 

[supercharger]

thanks guys firstly the plugs are wet with fuel every time i remove them dry em of put them back and it as i said trys to start never runs though.im leaning towards electrical. will go and try all these things know.
tried the ezl i call it icu.

thanks

supercharger

 

[supercharger]

well ive tried all of the above put a crankshaft sensor in from a running 300e no go tried running the fuel pump relay permanently no go cleaned up the dizzy cap and rotor arm still no go



supercharger

 

[Ian B Walker]

Crazy as it may sound but change or remove the air filter. Mine did the same and I found the filter clogged up.

 

[supercharger]

the air filter box is removed completely im stumped by this one.i have a 300e also which is running i have put the following from this car onto the 260 with no difference

ezl ignition control module
fuel pump relay
ecu (behind the battery)
crankcase sensor
ignition leads
distributor cap
.
there is fuel getting through as the plugs are wet with fuel when i remove them.dont know what else to try.

supercharger

 

[Hibbo]

Have you tried bump starting it? (if it's a manual)

 

[supercharger]

its an auto im afraid.although i do believe you can bump start auto,s in some circumstances.
annoying me to hell now i got a gut feeling its gonna be summat simple.
just dont know what else to try.


supercharger

 

[Ian B Walker]

A Thought. I wonder if someone has been playing with the tick over adjustment and the engine is flooding.

 

[Hibbo]

Is the firing order correct?

I *think* that these Mercs can be tow started as the autoboxes also have an oil pump driven by the output shaft, but that is 'from a bloke down the pub' type information!

 

[hmang]

how old is the fuel ?

 

[supercharger]

well the orange light was on when i got it so put a can full in before i started all this.

superchargered

 

[hmang]

old stale fuel could be your non start problem.

not too expensive to empty the whole system and start again with 100%known fresh fuel.

it's a bother i know, but its one variable out of the equation

 

[supercharger]

yes as you say its one less thing.i,ll give it a try now the sun is out again.


supercharger

 

[hmang]

then try dry out your cylinders as best you can by cranking the motor with plugs out.

then refit NEW plugs.
if you wetted the old plugs with fuel the insulators may be breaking down.
drying out is hit and miss

 

[supercharger]

GREAT SUCCESS

removed the plugs dried out the cylinders did blead some fuel through but not all. as i said i had basically transferred everything from the 300e with the exception of the coil i had tried another coil i had which i thought was good so just to be sure i put the coil from the 300e on turned the key and it fired on the button.

there is rather a loud rattling coming from the engine bay though im thinking camshaft gonna investigate shortly also discovered theres no back box on the car
LOL

Thanks for all your help guys.
im gonna put all the components on the 300 incl the coil just to check it out

 

[supercharger]

well she runs pretty well but the idle is very high 1400 rpm is there an adjustment on it somewhere.also it is difficult to start from hot upto 10 secs before she fires.i know there,s no back box at min but i managed to find one and am fitting it as i write but will this make a big difference


supercharger

 

[television]

Is the firing order correct?

I *think* that these Mercs can be tow started as the autoboxes also have an oil pump driven by the output shaft, but that is 'from a bloke down the pub' type information!

This is only for the record and nothing else,Auto boxes with a rear pump can be tow started, these were mainly deleted back in the late 60's. I see that one or more of the new big MB's has got a rear pump again.

Pleased the car is going

 

[Stevie A]

Can be tow started. You get a tow and once up to speed, put it in to drive quickly for a moment, then back into neutral and turn the key. Says this in my 190E manual with the 2.6 engine.