Author Topic: HELP!!! MISFIRE/STALL  (Read 977 times)

raueda1

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  • Assimilated. Resistance is futile.
  • Location: Salt Lake City, Utah
Re: HELP!!! MISFIRE/STALL
« Reply #30 on: 22 February 2021, 05:06 PM »
So, try this on for size.

I retime the points, I bumped the starter until it was on cyl 1 then gapped points at .014.


So I go to start the car, and hear a pop noise, come to find out, the fuel hose from tank to pump (which I just changed because it was leaking like a siv) explodes.

Excuse me?

So I guess I'll be ordering a fuel pump maybe? I don't even know.
I wish I could help.  Unfortunately I know nothing of D-jetronic or your car.  But I truly do feel your anguish.  I've also had inexplicable problems of my own.  So, I offer my moral support.  Good luck!
-Dave
Now:  '76 6.9 Euro
Before that:  1966 230S, 1964 220SE coupe, 1977 Carrera 3.0

celberg

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  • Location: Lund, Sweden
Re: HELP!!! MISFIRE/STALL
« Reply #31 on: 24 February 2021, 06:36 AM »
It should not explode... that side of the pump is not pressurized. Did you change all hoses back at the pump and attached the exploded hose at the wrong end of the pump by mistake?
350SL 1973
350SE 1975
SL500 1996

AceWolff

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Re: HELP!!! MISFIRE/STALL
« Reply #32 on: 24 February 2021, 08:03 PM »
No I only changed the down tube from the tank to pump.

That's why I'm so confused,  where is that pressure coming from?

I have some air hiss out the gas cap sometimes but I'd think the cap would blow off first before that hose.

It sprayed the rest of my fuel out to, like it was still pressurized.


I appreciate the moral support. I have 3k into this car after owning it for 2 months, and have drove it home and no further.
~Ace

celberg

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  • Location: Lund, Sweden
Re: HELP!!! MISFIRE/STALL
« Reply #33 on: 24 February 2021, 10:08 PM »
No, I think the hoses goes first. You have another one going in to the tank, the return line, check that to. Do a test. Put a rubber glove or something instead of the gas cap. See if it building pressure in the tank. You might have to change the gas cap.
350SL 1973
350SE 1975
SL500 1996

AceWolff

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  • W116 Newbie, W123 Enthusiast
  • Location: Western New York
Re: HELP!!! MISFIRE/STALL
« Reply #34 on: 01 March 2021, 02:10 PM »
That's a good idea about the glove.

So i was trying to order a new fuel pump, I suspect this one may be leaking out of the seal,  but I can't find them for under $600

Can anyone throw me the part number for the filter? All I can find is k jet filters.

This is such a headache, on top of it my insurance just jumped me to 400 a month
~Ace

ADV_rider

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Re: HELP!!! MISFIRE/STALL
« Reply #35 on: 01 March 2021, 06:30 PM »
That's a good idea about the glove.

So i was trying to order a new fuel pump, I suspect this one may be leaking out of the seal,  but I can't find them for under $600

Can anyone throw me the part number for the filter? All I can find is k jet filters.

This is such a headache, on top of it my insurance just jumped me to 400 a month

I recommend you change the points and get a pertronix. It's even easier than installing points.
About fuel pump and filter. try autohauasaz . com
https://www.autohausaz.com/pn/69458

https://mercedessource.com/store/1972-1975-r107-350sl-450sl-complete-fuel-pump-conversion-kit
this may help you undertand also how its connected


« Last Edit: 01 March 2021, 06:36 PM by ADV_rider »
W108 1972 280SE 4.5
W116 1977 450SEL 4.5
W211 2008 E63 AMG
E12 1981 528i BMW