Re: [DML] Re: Odd Starting Issue
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Re: [DML] Re: Odd Starting Issue



A-ha! so there are two of us with this exact same problem. I've been moaning 
on this list on this issue for a couple of years, and this is good stuff, 
Maynard.
My problem has increased in intensity (problem evident at lower and lower 
temperatures; it's now a problem in the upper 80's), and sometimes won't 
start unless I do the ole switcheroo for the usual hot-start problem.
I will check that relay and the wiring, though I don't think the wiring is 
it-- I've put in a new coil & resistor during these two years of issues and 
it was all inspected then. That relay though... and I do need to clean the 
ground again.

David, how does one verify the cold start valve? I don't think this one was 
mentioned back in May when I was asking for help last. and I still haven't 
done everything that mentioned then... so I can't moan too loudly. Todd, you 
may want to go back to May-June to read up on the discussions then. Google 
"hot outside" on the
groups.yahoo.com/dmcnews<http://groups.yahoo.com/dmcnews>site.
Keep us (especially me!) updated on what you find and I will do likewise 
(though I won't have time to play with it this weekend).

-Kevin
#4687

On 7/28/05, Harold McElraft <hmcelraft@xxxxxxx> wrote:
> 
> These are always difficult to diagnosis. Assuming you have a
> generally good tune on the car, there are some typical issues that
> can cause your symptoms.
> 
> Since you are "getting by" for now I would suggest a few simple 
> checks before embarking on a major test or part swap campaign.
> 
> Check the ignition high-volt start circuit. Primarily the relay
> mounted on the firewall by the engine compartment light switch. It
> is often overlooked and if it is not functioning can cause a hard 
> start. Interestingly, the relay does not show in any wiring diagram
> I've seen either. The circuit does but not the relay. If the ground
> to the engine for the relay is disconnected or weak the relay will
> not function and there is no hot spark voltage. So, check this relay 
> and its wiring.
> 
> Check all the wiring to the coil and the voltage resistor - good
> connections are important here.
> 
> Swap out the RPM relay. If you don't have a spare you should have
> one - These can act up and there are a couple of versions - one 
> being better than the other as you might suspect. See Hervey's web
> page for an explanation.
> 
> Run a cleaner in the fuel system. Selecting the right cleaner can be
> somewhat of a problem because some cleaners may be dangerous to the 
> seals in the fuel system. I recommend Marvel Mystery Oil - the red
> stuff. I have used this stuff in D's for 20 years and it keeps the
> fuel system spotless - not to mention the intake valves and ports,
> etc. - spotless. It can also clean deposits from the internal check 
> valves and improve the seal for a longer fuel pressure leak-down.
> 
> Harold McElraft - 3354

[long quote trimmed by moderator]





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