I accidentally used some Bosch (fr8dc) European spark plugs in a new engine I just built. It started up and ran like crap for about 4 minutes, then died.
Just figured out the plug thing, and now with brand new NGK BKR6ES-11 (stock 420a) plugs, it refuses to fire up again. No more spark. I gave it over an hour to evaporate with open holes, so it's not flooded. Fuel, compression, and cranking are fine.
And yes Terry, I realize of all the people on this board I should be the last one to fuck up my spark plugs. Enjoy the laugh.
My question is, assuming the plugs burned something out electrically, what did I break? Any other ideas?
#102212, "RE: Wrong spark plugs, what'd I blow?" In response to Reply # 0 Dec-09-06 07:26 PM by Star Turbo Talon
Sorry, i find nothing amusing about your misfortune. Any shots i would throw at you would be at your lack of an answer since you know oh so much........
All sarciasm aside, the only thing I can see failing would be the secondary windings of the coil. Since the coil is nothing more than a transformer, changes to the impedance could damage the windings. Honestly, i think something else is wrong. I wouldnt expect the coil to fail that easily. You didnt disturb the coil plug or any other plugs did you? Are you getting spark, fuel?
What is the resistance across those european plugs? I have never checked a stock set of 420a'a but I think I just might.
#102240, "RE: Wrong spark plugs, what'd I blow?" In response to Reply # 2
Well 90% of the problem was the two white wires that attach to the positive terminal of the battery were just corroded enough to stop making contact. Cleaning all the terminals up with a wire brush fixed that.
I think either my multimeter is broken, or neither the Euro nor 2gnt plugs had any resistance across them. At any rate the coil checked out OK.
The last 10% of the problem (and why the car died after 4 mins) is because the gas cap turned out to be bad and the gas tank had evaporated. Yes I'm dumb.
I've got some bad misfiring/rough running action going on now I'm figuring out, but I'm guessing (praying) the injectors got clogged with bad gas goo.
On the upside, I killed 4 black widows in the engine compartment with WD40 and a lighter. Almost made a vfaq on that topic for the wiki but couldn't find the camera.
all around. At least there's another 420a on the road now.
#102245, "RE: Wrong spark plugs, what'd I blow?" In response to Reply # 4
Meh, our minds get the better of all of us sometimes. Glad you got it figured out, now would be a time to suggest a back burner project of mine.
As I'm to understand, all a shop does with an injector cleaning is cycle the injectors rapidly in solution until they flow what they should. With that idea in mind, if one had a given volume of solution and an accurate timer, as well as something that would cycle the injectors where they could set opening/closing rates *cough*MegaSquirt*cough* then one wouldn't need to take the injectors to a shop to clean them. Sure you're not getting a nice printout of what your injectors are flowing, but you can visually inspect to see if the spray pattern is what you want and know how long it takes to empty a one liter of toluelene. That's the extent of relevance I have on the subject.
Representing the Central Cali chapter of 2GNT! (I think I'm the only member )
#102246, "RE: Wrong spark plugs, what'd I blow?" In response to Reply # 5
And as DSM law clearly states... just as I got one running, the other one died. The 99 just blew its TC and is now parked in its new home at work.
Good idea Keith, I usually just hookup a 9v battery and a little hose to dribble acetone thru the injector. I have a couple extra fuel rails, wouldn't be too hard to rig something a little more pressurized.
#102247, "RE: Wrong spark plugs, what'd I blow?" In response to Reply # 5
Originally posted by Keith2172 Meh, our minds get the better of all of us sometimes. Glad you got it figured out, now would be a time to suggest a back burner project of mine. As I'm to understand, all a shop does with an injector cleaning is cycle the injectors rapidly in solution until they flow what they should. With that idea in mind, if one had a given volume of solution and an accurate timer, as well as something that would cycle the injectors where they could set opening/closing rates *cough*MegaSquirt*cough* then one wouldn't need to take the injectors to a shop to clean them. Sure you're not getting a nice printout of what your injectors are flowing, but you can visually inspect to see if the spray pattern is what you want and know how long it takes to empty a one liter of toluelene. That's the extent of relevance I have on the subject.
You can do this in a plexyglass (pref something that can withstand the chemical your working with) and using common hydraulic laws calculate flow rate. A basic stamp with a simple circuit can control the inkectors well enough for our project vehicles... it works well on the bench as well. Its not that hard, do it all the time at school.
You can also make a hydraulic system and use it as a dyno One step ahead of ya keith
Member # 751
FOUNDER of the Central Cali chapter of 2GNT! (I got kicked out after I refused to go Cow tiping) - Hehehe you know who this is for
#102249, "RE: Wrong spark plugs, what'd I blow?" In response to Reply # 7
Just cause you're all edumakated and stuff you think you're better than me...you are when you gonna come down and let me screw-up, er, um, weld together that flex section?
bummer on the TC Dan, I just saw your post in the FS/WTB section, wish I had a spare... you know Jake might
Representing the Central Cali chapter of 2GNT! (I think I'm the only member )
#102261, "RE: Wrong spark plugs, what'd I blow?" In response to Reply # 9
Cool, one of the stock injectors was cracked and one was clogged, threw in some pintile Ford 200cc injectors (instead of stock 235cc) for now that work great.
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