So why is Bosch a bad plug i have a '88 4tech 5spd and i have no problems with mine what would you recommend as a good plug for them i dont have anything fancy yet for it but thats in the makings though
------------------
IP: Logged
01:14 AM
FieroReinke Member
Posts: 1065 From: St James, MO Registered: Feb 2003
So why is Bosch a bad plug i have a '88 4tech 5spd and i have no problems with mine what would you recommend as a good plug for them i dont have anything fancy yet for it but thats in the makings though
the platinum plugs seem to be hit or miss - a lot of people have had problems with the core electrode just burning away
I had Bosch platinums in my 94 S10 SS and they fouled up BADLY with a tan crusty/powdery byproduct that completely clogged the gaps on at least half of the cylinders(If I remember correctly). That was within 20,000 miles. The truck idled extremelt bad and didn't run worth a snot. I switched to the cheapy AC plugs and it's run great for 30,000+ miles(Yep, time to change those out!). On the other hand, I've hadgood luck with the Bosch in my van.
IP: Logged
11:40 PM
Sep 24th, 2005
Formula88 Member
Posts: 53788 From: Raleigh NC Registered: Jan 2001
well i had a 82 buick lesabre with a 307 5.0 that had the original plugs in it at 181k on it, lol. They was AC's if you know what the coral reef looks like thats what the electrodes looked like loland that was about a year and a half ago lol
IP: Logged
01:15 AM
Sep 25th, 2005
TennT Member
Posts: 1523 From: Humboldt, Tenn Registered: Nov 2002
This might sound a little wierd but a spark "pulse" carries all kinds of high frequency "noise". Could an ignition circuit form a type of "tuned" circuit that certain plugs don't play well with? The two factors are inductance and capactance, not unlike a tuned circuit in a radio or CB. The components like a plug with certain electrical characteristics. Naturally I assume that the heat range is correct for the engine. It just doesn't make any sense for plugs to work so well for some and not others, so I am assuming that the pulse width, current flow or other factors could make a plug fail quicker for some. Just musing, but this question has dogged me ever since I put AC plugs in a Ford eons ago. It didn't take long for them to fail. Looking for some common ground here.
I can pull all my plug wires and don't have to take anything off.
I may as well add that I can too - pulled the wires when i swapped valve covers.. takes all of 5 seconds per plug wire, then a few short extensions snapped together and i can remove the spark plug..
since the plug wire housing is a two peice snap together, once you slide it half way out you can pop it apart partially and then bend it in half as you slide the rest out.. works great
[This message has been edited by Kohburn (edited 12-19-2005).]
IP: Logged
09:25 AM
fieromadman Member
Posts: 2217 From: Oconomowoc WI, USA Registered: Jan 2003
Thats what i end up having to do kohburn, the short extensions and the "flexible" plug boots. Although yours is tilted further back tahn mine because with mine the rear window area is whats in teh way to pull them straight up and not the decklid. Not a huge deal though. i can still get the short extensions and stuff in if i had to, but i have the 100K mile irridiums anyhow and i seem to be on the pull my engine every year program.