Completing a glowplug circuit... without the glowplug
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Hey guys,
So I just moved to Colorado and I have to pass an emissions test to get my license plate. Long story short, when I bought my truck over two years ago, one of the glow plugs was out and come to find out, it mushroomed in the head. I've had an engine code since I bought it and haven't bothered until now. I don't want to pull the head to fix the glow plug and I don't want to break off the tip and try to fish it out....
If this were something really emissions related I wouldn't try to get away with it and actually fix it but since I don't want to rip apart my motor, how do you guys suppose I can get around this engine code problem?
I've been thinking of trying to figure out a way to mount a glow plug externally and plug it in, but just remembered that the harness connects inside the valve cover. I'm guess that I could probably splice a new harness into the existing one then find a pipe to thread the glow plug into to make sure nothing catches fire. Sound feasible?
second idea is to complete the circuit somehow, tricking the computer into thinking a working glow plug is working. Any ideas?
I'd really appreciate some ideas/advice guys. Thanks!
So I just moved to Colorado and I have to pass an emissions test to get my license plate. Long story short, when I bought my truck over two years ago, one of the glow plugs was out and come to find out, it mushroomed in the head. I've had an engine code since I bought it and haven't bothered until now. I don't want to pull the head to fix the glow plug and I don't want to break off the tip and try to fish it out....
If this were something really emissions related I wouldn't try to get away with it and actually fix it but since I don't want to rip apart my motor, how do you guys suppose I can get around this engine code problem?
I've been thinking of trying to figure out a way to mount a glow plug externally and plug it in, but just remembered that the harness connects inside the valve cover. I'm guess that I could probably splice a new harness into the existing one then find a pipe to thread the glow plug into to make sure nothing catches fire. Sound feasible?
second idea is to complete the circuit somehow, tricking the computer into thinking a working glow plug is working. Any ideas?
I'd really appreciate some ideas/advice guys. Thanks!
Here in Washington, it's just a diesel snap test, and no scanning for codes at all.
My Jetta TDI passed the emission test with the MIL on!
Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
That's what I'm thinking as well. I don't know what a snap test is but all I do recall is them hooking up the tailpipe sniffer and run the truck two different times. I don't remember them hooking anything up to my port in the cab when they emission my truck. They do sit in it to start it and maybe they need to report that the SES light is on??? I never asked because my light isn't on. They can plainly see all my mods (exhaust, DP Tuner, CCV mod) and the truck passes without any issues.
Lead Driver
Joined: Jul 2003
Posts: 7,404
Likes: 52
From: Wheatland, Mo
They look for the SES light. If it comes on, it fails til you get it fixed. Depending on which shop you go to, they may even ask for receipt of repairs. Some of the sniffer techs care...others just look to see if it is still on or not when you return.
BTW..... Welcome to Colorado! What part are you in?
BTW..... Welcome to Colorado! What part are you in?
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