From: owner-perf-list-digest ford-trucks.com (perf-list-digest)
To: perf-list-digest ford-trucks.com
Subject: perf-list-digest V2 #255
Reply-To: perf-list ford-trucks.com
Sender: owner-perf-list-digest ford-trucks.com
Errors-To: owner-perf-list-digest ford-trucks.com
Precedence: bulk


perf-list-digest Monday, October 4 1999 Volume 02 : Number 255



=======================================================================
Ford Truck Enthusiasts - Performance
Visit our web site: http://www.ford-trucks.com/
- - - - - - - - - - - - - - - - - - - - - - -
To unsubscribe, send email to:
majordomo ford-trucks.com
with the words "unsubscribe perf-list-digest" in the body of the
message.
=======================================================================
In this issue:

FTE Perf - plugs
Re: FTE Perf - plugs
Re: FTE Perf - plugs
Re: FTE Perf - plugs

=======================================================================

----------------------------------------------------------------------

Date: Sun, 3 Oct 1999 11:19:34 -0400
From: "Joe Merchak"
Subject: FTE Perf - plugs

Ok guys I have a question, I have a engine that is spark knocking, the
timing, fuel, air intake and exhaust is fine and checks out. I remember
that a hot or cold plug and also be the problem. Which way would you go to
help spark knock, colder that stock or hotter then stock.

Thanks

== FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html

------------------------------

Date: Sun, 03 Oct 1999 10:41:57 -0700
From: George Miller
Subject: Re: FTE Perf - plugs

You didn't mention what the engine is or if it's modified. In many
cases, a stock engine will build up carbon deposits from sustained low
rpm driving which may cause detonation. In that case, you want to go to
a hotter (numerically higher for most US plugs, lower for NGKs) plug to
burn off the deposits. For a modified engine with intake valve overlap,
the reverse is normally true. Colder plug for street and up again for
severe usage.

Your problem is generally caused by ignition timing. While the timing
may look fine at idle under a standard timing light, what's the total
timing advance at off-idle up to 3,000rpm? Whether you have a vacuum or
mechanical advance, it's important to determine the total. Most newer
timing lights offer a digital readout of your advance at various RPMs.

Sorry to ramble off the plug question but experimentation with plug heat
ranges will get expensive and may not solve your problem.

George Miller

Joe Merchak wrote:
>
> Ok guys I have a question, I have a engine that is spark knocking, the
> timing, fuel, air intake and exhaust is fine and checks out. I remember
> that a hot or cold plug and also be the problem. Which way would you go to
> help spark knock, colder that stock or hotter then stock.
>
> Thanks
>
> == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html
== FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html

------------------------------

Date: Sun, 3 Oct 1999 13:34:54 -0600
From: "Danger"
Subject: Re: FTE Perf - plugs

> Ok guys I have a question, I have a engine that is spark knocking, the
> timing, fuel, air intake and exhaust is fine and checks out. I remember
> that a hot or cold plug and also be the problem. Which way would you go
to
> help spark knock, colder that stock or hotter then stock.
>
> Thanks
.......

Year, make, model, engine, any modifications (high compression
ratio)?... these items are useful for troubleshooting.

Perhaps you could use the recommend spark plug by the manufacturer of
your vehicle and make sure that the gap is what it should be. In all honesty
it sounds like your problem could be a result of the timing being to far
advanced.

Danger
danger csolutions.net



== FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html

------------------------------

Date: Sun, 3 Oct 1999 16:45:11 EDT
From: FLR150 AOL.COM
Subject: Re: FTE Perf - plugs

Colder than stock. Being as a hotter plug makes a hotter spark and the spark
knock is most likely being caused by detonation, then you would need to make
the spark colder so as not to detonate. I would also recommend checking the
timing and run a tank of higher octane fuel. This may help with you problem.
Later
Wayne Foy
'94 Flareside SC
== FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html

------------------------------

End of perf-list-digest V2 #255
*******************************

+--------------- Ford Truck Enthusiasts - Performance ----------------+
| Send posts to perf-list....


To access the rest of this feature you must be a logged in Registered User Of Ford Truck Enthusiasts

Registration is free, easy and gives you access to more features.
If you are not registered, click here to register.
If you are already registered, you can login here.

If you are already logged in and are seeing this message, your web browser is blocking session cookies. Change your browser cookie settings to allow session cookies.




Advertising - Terms of Use - Privacy Policy - Jobs

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford is a registered trademark of the Ford Motor Company.