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Re: Can't loose that ping

Hi Mike,

So if compression was an issue it would be too high? Too low of compression
wouldn't make it ping would it?

How do you determine if the distributor is worn? It looked good physically
when I put it in.

What does it mean by the term "advance"? What's the opposite of advance?

What is the negative effect of pumping the brake pedel fast?
What should be the desired effect when pumping the brake pedel fast?

> Someone told me that the advance should top out at 2300 rpm. Maybe
> check that on yours by marking the slot white so you can see it through
> the fan blades or mark a spot in a measured static advance for
> reference.

I'm not clear on this. Is this checked with a timing light?

Thanks,

Bill

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:3F89C5E6.BD58CE20@sympatico.ca...
> What is your compression?
>
> Is your distributor maybe worn so it advances too far or too easy?
>
> Someone told me that the advance should top out at 2300 rpm. Maybe
> check that on yours by marking the slot white so you can see it through
> the fan blades or mark a spot in a measured static advance for
> reference.
>
> Maybe someone knows for sure what the top end for advance is for sure?
> If it tops too fast you can get a ping.
>
> Vacuum leak? Maybe try a spray of carb cleaner along the manifold
> gasket and TB base plate to see if the idle bumps. Same for vacuum
> lines.
>
> What happens if you pump the brake pedal fast a few times?
>
> Something simple is likely to pop up I am thinking.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> William Oliveri wrote:
> >
> > yeah, I have to get a 4.0L manifold. I have the head and the valve
cover.
> > I need the manifold and a kit for the head bolts (7/16 to 1/2 inch).
> >
> > shouldn't be too much more in parts. mostly labor at this point.
something
> > I didn't really want to do but no way around it.
> >
> > bill
> >
> > "L.W. (ßill) ------ III" <----------@cox.net> wrote in message
> > news:3F89B926.EED5AABD@cox.net...
> > > But, your manifold won't fit the 4.0 litre head. Maybe, put a
> > > sandwich gasket in and loose a compression.
> > > God Bless America, ßill O|||||||O
> > > mailto:-------------------- http://www.----------.com/
> > >
> > > William Oliveri wrote:
> > > >
> > > > Well I've tried retarding the timing, upping the octane, cooler
spark
> > plugs,
> > > > even (at the suggestion of JeepsRUs) tried one of those tornado
thingys
> > all
> > > > which didn't work. Still have pinging. Luckily, JeepsRUs refunded
the
> > > > 57.00 for the tornado thing when it didn't work. So I guess the
next
> > step
> > > > is to put the 4.0L head on the bugger. This I had planned anyway
but I
> > > > didn't want to be forced into it.
> > > >
> > > > booo hsssss

Re: Can't loose that ping

Hi Bill,
The auto computer programer is virtually a must for every Hot
Rodder with a electronic injection. In your case it would be the DRB-II,
written about at: http://www.visi.com/~bsimon/jeep/hesco.html
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

William Oliveri wrote:
>
> What programming tool are you speaking about?

Re: Can't loose that ping

Vice versa.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

William Oliveri wrote:
>
> Hi Mike,
>
> So if compression was an issue it would be too high? Too low of compression
> wouldn't make it ping would it?
><snip>

Re: Can't loose that ping

Too low compression would make it ping?
I thought ping was caused by gas igniting before the spark got to it due to
compression. That's why high compression engines use higher octane. Is
this right? Why would low compression make it ping?

thanks,

bill

"L.W. (ßill) ------ III" <----------@cox.net> wrote in message
news:3F89CE4D.A56EC3D3@cox.net...
> Vice versa.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
>
> William Oliveri wrote:
> >
> > Hi Mike,
> >
> > So if compression was an issue it would be too high? Too low of
compression
> > wouldn't make it ping would it?
> ><snip>

Re: Can't loose that ping