mechanical or electronic injection 500sl 1991

[pancholi]

i need some help please,
i am thinking of having my 500sl 1991 converted to LPG.
however the company needs to know if it is a mechanical or electronic injection.
how can i check this? any engine features or will it be on a list?
frame no? 1290662F034064.
many thanks

 

[Richard Moakes]

Almost certainly KE Jetronic, mechanical injection.

Look at the back of the plastic engine cover up by the bulkhead, if you see a silver unit about 5" in diameter with loads of small diameter metal pipes heading off to different parts of the engine, then you have mechanical injection for sure.

 

[Richard Moakes]

...and by the way, my advice would be, don't do it !

KE Jetronic and LPG are not the best of friends, you will find old threads on this forum to confirm that.

 

[pancholi]

oh noooooooooo!!!!!!!!!!
its costing me £70 per week in fuel!!
i have had her for 4 years and kept her perfect..
but the costs are now too much..
is this the end??
any ideas or am i doomed .....

 

[Richard Moakes]

How many miles a week are you doing to get through that much fuel?

I have just bought my 500SL and you have got me worried !

 

[pancholi]

i put on about 310 miles a week.
country driving between 55-70ish mph.
no town driving!!!!

 

[Richard Moakes]

Well, thats a fair mileage, so I suppose a 5L engine will use that much fuel.

I can only suggest doing what I do, keep another car as a daily beater commute, something small and diesel would allow you to keep the SL for weekends and nice days?

 

[television]

I can achieve between 22 and 26 doing 30 mile urban runs, when I bought it it returned 29.9 doing motorway miles

 

[pancholi]

your right there.. getting about 22ish mpg..
but it breaks your heart when you see figure like 60-65mpg on these new desiels...
i know that they are a totally different breed of cars to the sl but it does put a rye smile on your face at the petrol pumps...