Why would you add HEET to your gas? Aren't you running ethanol gas? If so, you already have alot of alcohol in the gas..... I could see having lots of alcohol in the fuel making the plugs look white.
I know that voltage going to the coil and the resistance of the coil itself is critical. The M&H (aka Lectric Limited) conversion in my distributor calls for use of the factory resistor wire and a factory type coil with resistance between 1.5 and 1.8 ohms. My coil has 1.8 ohms resistance and there is about 8.5 volts to the + side with the motor running. I think that meets the spec for this conversion. It's the distributor that Jim dyno'd my motor with. But I have heard some feedback that this system is borderline for high horsepower engines and also some problems when it heats up. I am considering changing to an MSD or Pertronix. Here's the Lectric Limited spec on my current setup with regard to the coil. COIL The Breakerless SE is optimized for use with either the factory original coil or Breakerless Replacement Plus series coil. Substitute coils that have a primary resistance of 1.2 to 1.8 ohms are also compatible. Very low resistance MSD Blaster and Accel Super coils are supplied with a supplemental resistor to raise the primary resistance to 1.5 ohms. Failure to use this supplemental resistor will damage the Breakerless SE module. IMPORTANT: Ballast Resistor - This ignition is designed to work with the factory installed ballast resistor. The ballast usually takes the form of resistor wire that is part of the engine compartment wiring harness. It may also be in the form of a small white ceramic block mounted on the firewall in series with the +12V supply to the coil. Its purpose is to limit current to prevent coil overheating and point burning. The ballast typically has a resistance in the range of 1.2 to 1.8 ohms. The ballast resistor (or resistance wire) should not be removed when installing the Breakerless SE
No, I have been running only ethanol-free gas in this car since the new motor was installed. I have a fuel supply house that sells only ethanol free gas (93 octane) along with various race fuels just 1 mile from my house. I added the HEET just in case.
I have never had good luck with the single wire ignitions in high performance applications, although I know some who have. I would recommend the Pertronix III with the FAST PS50 coil. I have this set up on 3 of my cars and have never had an issue.
I'll take a look at that one. Does it require using the resistive ignition wire to the coil or, did you change to 12 volt non-resistive?
12v for Petronix3 and their coil. I had a similar problem on my 347 FSB and went to a Mallory Master Blaster 50,000 V. Maybe the can of Heat solved your gremlin, these cars are never cut and dry when it Comes to some things that’s for sure.
I agree with JimWeise , the last thing that changed was the refuel, diesel in petrol will cause the sooty plugs and the rough running and will eventually damage the pistons, pour some of that fuel out on say a clean sheet of steel or similar in the shade ,let it evaporate , see if there is an oily residue . You said that drove 1/4 mile and turned left, that would be enough distance to burn the existing fuel in the carb ,fuel lines and pump, if it stumbled while turning there could be a loose wire or a bad earth , I did mention needle and seat previously, which can easily sorted out tap the carb with spammer wait 5 minutes should start again . There has been a lot of response to this but I think it’s something simple ,I hope you find the cause , if it ever happens again you will know
Based on your word-choices, I'd say you're not from around here. It may be that where you are, gasoline evaporates. One of the things I learned in 1983 when I bought a high-performance sport bike and occasionally filled the tank at the airport with 100LL, is that Avgas evaporates, E10 "premium" pump gas reduces to a slimy, oily residue if you leave it long enough. Far as I know, the only thing that's changed since then is that it's way harder to get Avgas for a motorcycle at my airport. Letting it evaporate and looking for diesel-fuel residue is not really an option where I am, and the rest of America by extension. I have a feeling that if pump gas was properly analyzed by lab-grade instruments, we'd discover all sorts of unexpected ingredients mixed into the fuel--which maybe accounts for the widely-varying reputation of E10. I think that they're mixing toxic waste into the gasoline in some places, and the Ethanol is getting the blame for the results.
Depending on how much diesel is in the tank, if you toss a lit match into a puddle of diesel fuel, it’ll go out. That’s because diesel is much less flammable than gasoline. In a car, it takes intense pressure or sustained flame to ignite diesel. On the other hand, if you toss a match into a pool of gasoline, it won’t even touch the surface — it ignites the vapors above the surface. When I was in the Navy, we carried Avgas (highly flammable f/u/w prop-planes & helicopters). However, Jet Fuel is a high grade of Kerosene, much like diesel. At standard air pressure, you can drop a lit match in a bucket of jet fuel, and it will just extinguish the match. VET (Navy)
No ,I’m from down under, I’m assuming that the “seasonally frozen wastelands “ you’re somewhere near Canada? . Gas does evaporate down here and diesel does too just takes a little longer, the reason I suggested diesel contamination is because of the mysterious phenomenon of “cocktails “ which happen unloading fuel a Gas stations . I have retired after 32 years as an owner driver on interstate hauling tankers loaded with anything hazardous that could load in one , anything from tetra ethyl lead to spent fuel rods to hydroflouric acid , I managed to avoid making any“cocktails” but I’ve seen plenty . When ethanol was first introduced in Australia it was not blended at the refinery loading rack ,but instead dropped into gas stations tanks on top of the petrol without concern for the ratios ,also ethanol is hydroscopic ,absorbing and transferring ,all the water from the storage tanks to the customers cars ,quite a few only got as far as the exit driveway . If you knew what went into gas (petrol) LPG (gas) you would be amazed to say the least. I hope you’re thawed out and enjoying the summer months. Cheers
JP-4 was 50/50 gas/kero. Navy used JP-5 mostly kero, due to lower volatility. We started moving to JP-8 which was very much like the JP-5 in the late 80s.
Michael all I can tell you we used to smoke and flick cig buts & matches into all grades of JP with no flames. Good thing I was on the firefighting team, lead hoseman. Young & Dumb @ 19. I was in the Navy 1968-1972, when ships were wooden, and men were made of steel. lol We stoked the boilers with Red Oak. Not really.... We used Navy Special Fuel Oil (NSFO). Now I understand, the Navy uses, NATO F-77 to Naval Distillate Fuel NATO F-76. USS Essex CVS-9 Aircraft carrier 1968-1969. Decommissioned USS Milwaukee AOR-2. New class of Tanker in 1969-1971. USS Grand Canyon AD-28 Destroyer Tender 1971-1972 Home Port - NewPort RI, 6th Fleet. Naval Active Reserves: USS Simon Lake AS-33 Nuclear Sub-Tender 1978-1981 Home Port - Kings Bay, Georgia, 6th Fleet First Class Machinery Repairman, GO Navy Beat Army!!!!
Lucky bastage. As I said--if you give it long enough, gasoline here will reduce to a oily smear. I guess the lighter molecules evaporate, leaving the slimy dreck behind. Avgas evaporates "dry". Smells like gasoline used to smell, and even the exhaust smells like Olden Days. Things could be bad here the first few years of "gasohol". I don't know how the alcohol was put into the gasoline--at the refinery, or at the gas station, or somewhere in-between. However, there were lots of complaints about the alcohol "cleaning-out" the contamination from the underground gas station fuel tanks, moving the water, dirt, etc. into the customer's vehicle tank. I remember as a vehicle tech, testing fuel samples taken from customer cars looking for excess alcohol and water contamination. Our EPA mandated double-wall underground tanks with built-in water sensors. Lots of stations dug-up their old, leaking tanks and replaced them with new EPA-compliant ones. And then the problem MOSTLY disappeared.
