[Roadsters] 1600 tuning issues

[Roy Haslett]

It has run and idled well up until the last few hundred miles, no
backfires. Has run especially well at highway speeds (60-65). I had been
getting some hesitation on the street but attributed it to the heat and vapor
lock.  As the sputtering and backfiring started and increased I decided to
change out the electrical components from the coil to the plugs. (They were
all pretty well toasted).   I believe to have the gaps all correct and I
believe the parts to be ok (Beck Arnley).  I think it is a matter of the
timing and carb adjusting at this point.  Another current symptom is run-on
(dieseling) after shut down. What usually causes that?
FYI.  Fresh head about
5,000 miles ago.  Engine has approx 20,000 miles on rebuild (done back in the
80's) Does not burn any oil.
Thanks,
Roy
To: Datsun Owners List
<datsun-roadsters at autox.team.net> 
Sent: Tuesday, November 27, 2012 8:13 AM
Subject: Re: [Roadsters] 1600 tuning issues

Lots of good suggestions, but did
it ever run & idle correctly, and not backfire, i.e. are these long-standing
issues, or did they appear after replacing the parts? If these are new issues,
when and/or how many miles ago did it run properly?

Pete

----- Original
Message ----- 
From: "Roy Haslett" <hrhaslett at yahoo.com> 
To: "Datsun Owners
List" <datsun-roadsters at autox.team.net> 
Sent: Monday, November 26, 2012 8:56
PM 
Subject: [Roadsters] 1600 tuning issues 


> Hey All, 
> I just replaced
my fried points, condensor, cap and rotor...plugs 
> too. My 1600 was running
poor and backfiring, alot of hesitation too. 
> Adjusted valves as well to
.017 hot. 
> 
> My problem is its still running weird, backfiring on
deceleration. 
> I have adjusted the timing as best as I can and 
>
acceleration is strong, just the sputtering and backfires when backing 
>
off...idle is not great either....its high at about 1100 rpm and I can't 
>
get it lower.
>
> Any suggestions as to tuning? 
> Thanks, 
> Roy Haslett 
>
67 early 1600 
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