misfire cyl 1-3, coolant leak
i recently replaced the heater core after multiple unsuccessful flushes.
so when there was a small leak i saw some moisture near the heater core, and decided to bypass it again. refilled the coolant tank and went on with my day.
the next day, (yesterday) on a long drive from houston to dallas i got about 70 miles outside dallas and the temp guage started jumping up and coming back to normal. we stopped and noticed the tank was near empty. we refilled and resumed carefully. all was good till home.
today we went to luch just up the road and caught the needle jumping up again. pulled over immediately and again no coolant in the tank. we assumed it was due to a faulty coolant cap allowing the fluid to boil out. water/coolant mix everywhere, noticed mainly on the tank side of the bay, on top of the tank and splattered on the fire mat right above the belts. we replaced the reservoir cap and refilled after cooling off.
just went downstairs to check the levels and the coolant is back down to almost empty. a closer inspection of the entire coolant system, i see moisture along the passenger side of the radiator, still atop the reservoir, on the frame below the belts. water pump was dry.
thought of getting a uv dye to find the source, but with the belts splattering coolant mix everywhere i dunno that it will be clear to us where its coming from...
1. coolant smells a bit like oil/gas... kinda....
2. not seeing a massive puddle under the car ever.
3. oil is NOT milky, and appears to be waterless
--> all of this comes on the heels of the other possibly unrelated issue of the misfire in cylinders 1,2,3.
we did a plug and wire change shortly before bypassing the heater core.
weird-- cylinder #1 old plug had NO ceramic.
immediately after plug and wire change we noticed a good amount of constant power, but a randomly timed stutter. the stutter is always there, but less intense in neutral or park, more intense when idling in drive, less intense idling in drive with the ac on.
we thought the fuel delivery might be a bit off considering the condition of the old cylinder 1 spark plug, so we got some fuel injector cleaner (lucas) and also had the fuel injectors cleaned at walmart under pressure. some new gumout products service they offer for 20 bucks.
after the injector service at walmart, there was a check engine light and we took it to autozone to have the codes pulled. we didnt get the printout, but the guy said the codes were misfires on 1, 2, and 3. we figured we didnt get the wires on just right, the back side of the engine is a turd to chage the wires on...
we checked and double checked the placement and order of the wires, replaced the new set with another new set. still no change. thought to look at the coils pack, but our o'reilly bill is getting outrageous for this week LOL
any help greatly appeciated