struggling to start and stay running
ok girls and boys,
patient is w126 chassis 1987 420sel she tries to die (successfully i might add) when i step on the gas pedal...also has very tough time starting....cranks over fine but since she sits a bit.... so im thinking obvious things like fuel filter and fuel pump relay to start.... pls advise any other ideas... lyle in west texas |
Lyle, first step would be to replace the fuel filter which should be done every 60,000 miles.
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I have the same problem with my 420SEL ! Except now it will not start at all. Good strong spark,compression good and even.It will not try to start w/ starting fluid !!!
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lyle_H:
1. Check the over voltage protection (OVP) relay, there is a fuse on top of it and it is located on the firewall a bit left of center. 2. Ensure that BOTH fuel pumps are running. 3. Ensure that the cold start valve is spraying fuel during a start attempt. James Peters: Check OVP, your description sounds like no power to the fuel pumps. |
an update...
what i did was have my local guy wire my fuel pump to the battery and put a switch in, so i manually turn on the fuel pump, so i have power to the fuel pump....
could i still have an OVP issue? lyle in west texas |
I has good fuel pressure and will not try to start even with starting fluid. You can hear the pump spool-up at key on.
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starting issue
to james peters:
right now car is idling rough....how does one know if the second fuel pump is running without getting under the chassis? i am but one person lyle in texas |
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