datsun-roadsters
[Top] [All Lists]

Re: [Roadsters] Still stumped--maybe no more?

To: datsun-roadsters@autox.team.net
Subject: Re: [Roadsters] Still stumped--maybe no more?
From: Tim <tputland@charter.net>
Date: Sat, 10 Jul 2010 11:52:52 -0700
I have replaced the plug wires as I was told they looked beat even though I had 
replaced them last year, I put a new rotor on, cleaned up the cap and ordered 
new (my new ones only fit a stock dizzy), removed the radio noise condenser as 
I was told if it is bad it will affect performance, and double checked the 
timing, plugs and carbs. 

Car seems to run fine until I am, again, at very high speed. Once the engine is 
totally heated up, I seem to get slight hesitation (missing?) around 80+ mph. 
After this last run at speed, plugs looked good by the way.

Am I possibly at the top end of the motor's capability at this point? Could 
this be why I am getting this slight hesitation? 

Can it be possible that my (less than four year old) coil is failing at high 
temps & speed?

Thanks again.

Tim




---- Tim <tputland@charter.net> wrote:
When I last ran my Roadster, it was still not running right. I had set the 
timing,
re- balanced the carbs, and fixed the fuel mixture**. After this, it seemed to 
be running well pulling strong through all the gears with no ping or misses. 
Then, at about 75 or 80 mph, it started to do the hesitation/miss thing again 
it was doing last week (when I was about half way home from MidOhio -- I posted 
about this as you might remember). Based on what I had read, I figured it was 
running lean so I pulled off the road (a few times--this was last Sunday) and 
each during each stop slowly adjusted the knobs and ended up just under a 
quarter turn to richen the mixture. After the first and subsequent stops, it 
was again spitting/bucking/running rough; too rich now I assume. I went home, 
re-set the fuel mixture back to where it was above**. I was still not able to 
get the spitting and bucking to stop.

At this point it was getting too hot for me, both under the hood, in my head, 
as well as outside so I parked the car. This is where I am at and have not 
looked at the car since last Sunday.

When I had checked/"fixed" the timing last week while in Indiana, I do not 
think I had done it right: The timing light I was lent was of the fancy variety 
with a setting knob that I must have not used correctly. When I used my light 
at home, the timing was up over 30 degrees of advance. I am now set at 16 
degrees on a de-smogged 70 1600 running a GB EI dizzy.

Any thoughts please.

Thanks

tim
________________________________________
Datsun-roadsters@autox.team.net
Donate: http://www.team.net/donate.html
Suggested annual donation  $16.00
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe/Manage: 
http://autox.team.net/mailman/options/datsun-roadsters/tputland@charter.net
________________________________________
Datsun-roadsters@autox.team.net
Donate: http://www.team.net/donate.html
Suggested annual donation  $16.00
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums

<Prev in Thread] Current Thread [Next in Thread>