WOW - What a difference
 

Its that time of year to do my maintenance (check timing, set tappets etc..)

TIMING:
stock:8btdc,
maintenance check:10btdc
I run 12 btdc (on 87ron (91 ron in nz) no pinking

tappets:
reset tappets to stock clearances

THE CARB:
jets were rediculously dirty, cleaned them out with carb cleaner,
checked the fuel adjustment screw, HOLY CRAP ITS ALL THE WAY OUT,
A/F ratio was 11.5/1!!!!!!!!!!
(omg and i was still getting 35mpg)
have leaned carb to about 14/1 (have to compensate for driving)


but wow!!!!, i cant believe the a/f ratio was that bad, im glad i do maintenace checks, i have more power and it starts better now as well,

Will have f/e numbers up soon, keep an eye on my graph, hopefully it will go up :)

...I'm curious, what instrument did you use to determine the A/F ratio was 11.5:1 (at idle?).

I have a friend that owns a rolling road dyno
every year I use it for maintenance

a/f was done by a teter up the tasilpipe

11.5/1 a/f ratio was actually done at 60kph
(roughly 35mph)
when tested at idle it was roughly 12.7ish

Why do you ask mate

...because I was wondering *if* a new MPG-meter had been devised that was somehow (?) able to derive or calculate A/F from data extracted from the OBD-II connection.

...I didn't think it was possible--but, I've been wrong LOTS of times--so I asked.

Nice find. I'm sure that tune up will help!

um... my cars 29 years old bro,
i used words like carb, obd2 and carb just doesn't go together, judging by the cars you have im sure you know how to work on the 'old faithfuls

"Does your car have an OBDII hookup?"

"Yes. It's in the passenger seat. I found it at a junkyard for $5."

That's where I am. Josie's version of OBDII is a flowmaster muffler (Earbone Tech Tacho Systems patent pending), whatever crusty ol' Sears timing light I can hook up to the #1 plug wire, and a notebook.

...I'll take that response as: "...nope, nothing but old-fashioned tools..."

timing
 

after i put in a new dizzy i set time by ear,, no plink .. did not run very good at low RPM's ,, when i checked it with a light it was at 60 BTDC can you imagine , engine running at 60 BTDC and no ping/plink ..there is an additive jar attached to the intake manifold that i put different *stuff* [var. mixtures of fluids] to which i attribute the no-ping ..

set for 20 BTDC and runs so very much better ,getting quite good FE next time i fuel i get a reading.

here is high tech tools these parts

tried var. methods of setting the mixture ,, engine speed/ vacuum gage ..now trying to set mixture using the EGT[exhaust Gas temp] set for LOP[lean of peak] a AFR would be nice but pricey ,,

http://ecomodder.com/forum/attachmen...1&d=1312739111

sorry mate, didn't mean to offend, yeah when on 95ron (equivelent to 91ronish in america) i set it on 20btdc, but thats costing so i thought i would try the 87ron (91 ron over here), had to retard the timing to what it is now,

my engine doesnt seem to like static timing so I might have a gander at the timing chain and see whats going on, maybe it has stretched