Anyone else had problems using iridium plugs?
Thread Starter
|
Road Master
Joined: Dec 2014
Posts: 994
Likes: 43
From: Essex, England
Anyone else had problems using iridium plugs?
Fitted some NGK DCPR7EIX to my stage 1 Iron a few thousand miles back. Lately i've felt the bike wasn't as responsive as it used to be and a bit more vibey. I've been autotuning but just couldn't get that throttle response back and was becoming convinced it was down on power.
So I went out for a autotuning session and flashed it all back and then tried to put it through its paces. It spluttered under load and just wouldn't pull to high revs. It was misfiring.
Checked the usual terminals and earth points but all good. Might be a plug I thought. So as a process of elimination I put the old non iridium plugs back in as they came out when the bike was running perfectly. Problem solved.
Not only was the problem solved but I hadn't realised just how bad the bike had become as it degraded over time. it feels like I've had a 1200 conversion done now, lol. Instant, eager throttle response, much smoother throttle roll ons with a lot more grunt.
I'd put iridiums in based on the video below, but I guess they don't work for every bike? Anyone else had problems with them or are you using them successfully?
So I went out for a autotuning session and flashed it all back and then tried to put it through its paces. It spluttered under load and just wouldn't pull to high revs. It was misfiring.
Checked the usual terminals and earth points but all good. Might be a plug I thought. So as a process of elimination I put the old non iridium plugs back in as they came out when the bike was running perfectly. Problem solved.
Not only was the problem solved but I hadn't realised just how bad the bike had become as it degraded over time. it feels like I've had a 1200 conversion done now, lol. Instant, eager throttle response, much smoother throttle roll ons with a lot more grunt.
I'd put iridiums in based on the video below, but I guess they don't work for every bike? Anyone else had problems with them or are you using them successfully?
Thread Starter
|
Road Master
Joined: Dec 2014
Posts: 994
Likes: 43
From: Essex, England
I just don't understand why iridiums play up in some bikes? A guy was telling me his gsxr was the same, it just didn't run right with iridiums despite them being recommended to him? It ran but no where near as well as it did with ordinary plugs?
Outstanding HDF Member
Joined: Nov 2010
Posts: 2,591
Likes: 68
From: Big Bear City, CA
I've run the NGK Iridium's in 3 different motors (80" Evo, 1200cc Sporty & 111" S&S) with noticeable improvement. They've become my plugs of choice over the past 4 years.
Trending Topics
Grand HDF Member
Joined: Dec 2012
Posts: 3,782
Likes: 1,202
From: river
Nice call !!! I agree! Especially on a stock bike!!! Heat range is something you look at when when temps and or compression rises. These turds will run on any plug. It's a big lawn mower! Especially stock stuff!
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski