it seems like you got a few difference answers which is why i think there is all the confusion. bosch wants everyone to think that their plugs are fine in hondas because it is a huge market. but the coils in audis and bmws, mbz's and stuff are completely different than the ones in hondas and they are made for bosch plugs. you ASE so then you know about high and low impedance injectors. what happens to the ECU on a honda if you put in injectors of the wrong resistance?


i think in general probably most people wont blow their coils with bosch plugs probably for the biggest reason is that they just dont keep their cars for very long. usually on this site i only hear complaints about bad gas mileage with them. and its probably more prevalent a problem on older coils.. but on the second day after putting bosch plugs in my car the coil blew, and thats when i found out that it was because of the plugs. seriously the only time in 254 thousand miles that my car broke down on me. either way its just not worth it. the ngk v powers are like 1.99 a plug, even with a whiff of possible non compliance why would you use anything else.

 

I still don't see it because you are talking traversing problems to the coil all the way back through the distributor from the plug. I'm sorry it just isn't likely. If you were saying Cap/Rotor or wire issues, understandable. Or even the distributor. But transfering the problem all the way back to the coil just isn't very likely.

Idaho Speed Center's Response was "Because they run better on NGK" not because they cause any damage.

Personally I think your coil was just getting worn, 254k miles is a lot and time for a few things to go wrong, and people were trying to give you reasons for something that went wrong. Or they had there own view and blamed it on what they thought it was.

 

[size=3]Hello again... Back to the original issue at hand; This problem has become more intermittent than expected. Factory spark plugs in, battery is new, distrib-cap & rotor new. Car runs great but, every once in a while it simply will not start. I am now suspecting 1) a relay that trips and resets after time, 2) ignition coil or control unit. 3) fuel pump relay or sending unit.
Any ideas other than Bosch plugs causing coil failure? [/size]

 

Okay so I have to throw my two cents in here based on electrical knowledge.... If you have an 8 ohm reciever (I'm talking home audio...) and you throw 2 or 4 ohm speakers on there you'll torch your reciever, doesn't ALWAYS happen right away but over time it will, and if you have an EQ in the line leading to the speakers, it's still going to torch the Reciever not the eq... My guess would be something to do with Impedence or resistance causing to large a draw (or to little) on the coil... It makes sense to me based off electrical theory...

As far as the intermittent start issue: When the vehicle doesn't start does it make a clicking noise or turn over like normal and just not "fire"? Have you checked to make sure all your cables are tight?

 

After the first encounter of "No Start" I replaced the rotor and cap, serviced and then I replaced the evil "Bosch" plugs with factory fresh NGK. No difference. After sitting for an hour or so, it fired up like nothing ever happened. Later, got in... No start.. cranked like a mother but, would not fire. All connections tight, Battery New, Distib cap/rotor New, All electrical connections, plug wires etc checked. Fuel full. Later on... The car started like it never had a problm.
The car runs great 99.9% but, every once in a while it will crank like either no spark or out of gas. The last time it did not fire up, I checked for spark and there was spark at the plug tip. I am down to the basic possiblity that an electrical component got fried and created a bad solder connection or a relay of some sort trips (either related to the coil/igniter or fuel pump) and resets on its own. I doubt if the coil is the issue because when it fries, it usually FRIES completely. It rarely will give intermittent problems it either works or not. That's where the ingnitor may be the problem... I am wondering if that is the component that is fried at a solder connection and occassionally won't work, or it trips relay. I'm out of ideas at this point and would appreciate your expertise.

 

A couple of things i would like to throw in here..............car is a 99 accord correct ?? if so............

First off ,,Lightshow the fuel filter starting in 98 is located inside the fuel tank , ,,not on the firewall,,,,,,,,,,93 accord was the last year filter was at firewall..
# 2 ,on 99 accords there is a ignition swt=itch recall ...have you done it??? that could be your problem...call the dealer and give them the vin # and have them chk if recall has been done ...

and last but not least,,,,,,,,,,I have never seen bosch or autolite etc etc blow a coil ,,i have seen hondas run like **** and cause to fail emissions ....
so if you have a honda stick with NGK plugs and honda plug wires ..

 

Desert Honda: Ignition recall was done a few years ago. I am glad you mentioned the fuel filter location... I thought I was having a "senior momment" because I could not find the fuel filter on the firewall.... Thanks for restoring my faith in my powers of observation.