[DML] Re: Changing Coil

["David Teitelbaum" <jtrealty@xxxxxxxxxxx>]

If you notice a big improvement when you replaced your coil and spark
plugs then I submit that it isn't that you put a "hotter" coil in,
just a new fresh one and new, freshly gapped spark plugs. You would
have noticed the same improvement if you got a new Bosch coil. Coils
do age, spark plugs do wear (the gap increases) ignition wires break
down. After 20 years of course you will notice an improvement if you
put some new parts in! Even if you don't use the car and wear the
parts out these parts age. Anyway I can't expect everyone to agree
with me ALL the time! My advice still stands, the best "bang for the
buck" is a through tune-up. Anything more than that and you will spend
a lot more and gain a lot less. Of course it helps that not only do
you put in new, fresh parts, but that you do it correctly and fix all
the little things that you will also find. Along with all the old,
worn out ignition parts are all the little vacuum hoses that harden
from the heat and age that crack and leak.
David Teitelbaum
vin 10757 



-- In dmcnews@xxxxxxxxxxxxxxx, Louie Golden <louie@xxxx> wrote:
> This is the only time I can ever remember disagreeing with David T!
I actually put a new coil and spark plugs on my old DeLorean a couple
of years back, and it was like I had dropped in a new engine in the
car. People often forget that the ignition system wears out, corrodes,
and needs replacing just like any other aspect of the car. After 23
years, it's a good bet your car's ignition system isn't what it once
was, and could benefit greatly from a replacement. Besides oil filters
and air filters, your spark plugs and coil are the most disposable
parts on the car. I can GUARANTEE you'll feel a difference if you
replace them. I do have to agree with David in one aspect- if you're
going to replace the coil, do the spark plugs and wires too. It's one
of the cheapest and easiest maintanence things you can do to your car,
and also one of the most important IMO.  You'll get a more complete
burn of the fuel in the cylinder which means better performance and
gas mileage. Especially if you're going to go to a hotter coil, you
really need to invest in new wires. Adding more power to corroded
cracked old wires will only exacerbate wear, and you may notice a DIP
in performance. It's only $50 extra... go for the wires if you're
going to upgrade the ignition.
> 
> Louie Golden
> VIN 5252 Charlotte, NC
> 
> --- "David Teitelbaum" <jtrealty@xxxx> wrote:
> Unless your old coil is bad you won't notice much improvement. The
> dangers in going with a higher voltage coil are the following:
> The old ignition wires may break down if they aren't already shot
> The "hotter" coil may draw excessive currect from the ECU and burn
it out.
> The cap and rotor are only rated for a certain voltage level. If you
> exceed it then under certain conditions you will get arc-over.
> In general you can't usually get very much by upgrading one component
> in a well engineered system, this is an example. On a positive note
> several (maybe many) have switched ignition coils and find no bad
> effects. At the very least you should consider replacing the secondary
> ignition wires, cap, rotor, and spark plugs to get the full benefits
> of the "hotter" coil (if any). In most cases just replacing all these
> 20 year old parts will do more than a hotter coil.
> David Teitelbaum
> vin 10757
> 
> _____________________________________________________________
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