1986es Engine Noise...r.i.p.??

[egaaad]

[COLOR=purple]1986ES ENGINE GRINDING

NOISE IS COMING FROM UNDER THE SILVER THING ON TOP OF THE ENGINE. IS THIS FATAL?? WILL ADDING FLUIDS ALLEVIATE THE NOISE? IT SOUNDS LIKE IT'S COMING FROM A TIN CAN IN THE CENTER OF THE MOTOR.

ALSO, I REGRETTABLY USED 87 OCTANE GAS DURING A BRIEF MOMENT OF POVERTY AND EVER SINCE MY POOR BEEMER SOUNDS MORE LIKE A DIRTBIKE AT ABOUT 120dB THAN A HUMMING, PRECISION TUNED PEFORMANCE VEHICLE. (SNIFF) DID I BURN OUT THE CATALYTIC CONVERTER???

ALSO, THE FUEL ECONOMY IS WORSE THAN A HUMMER, I AM PLANNING ON A TUNE UP THIS WEEKEND (INSPECTION II)........

- WELL IF THE RODS ARE MANGLING IN THIER SHAFTS... sigh...ANYONE WANT A PRISTINE 325ES BODY? INTERIOR IS IMMACULATE...NEW TIRES??? ALTERNATOR??

GOING ONCE...GOING TWICE...

[nukeduster]

1. you dont need anything higher then 87 octane in m20 motors (which is what you have)
http://www.idavette.net/hib/fuel/index.htm

2.you wont damage a cat. from using low octane fuel unless it has high MTBE or lead content, which would make it high octane fuel, so, you wont damage a cat with low octane fuels. :P

3. bad fuel mileage is leaking fuel system and or bad o2 sensor.


4.what kind of noise is comming from which silver thing under the hood? how long has it been since you changed your oil? how long has it been since a mechanic has adjusted your valves? is the noise ticking, clunking, banging, rattling, squeaking? my head hurts, im going to go grab a coffee.

[egaaad]

1. Thanks for the qd on gas http://www.idavette.net/hib/fuel/index.htm ((by the way i lived by the refinery pictured in the article, besides MTBE , they also ship the isotope used in rocket fuel too..(its in the orange hershey kiss looking thing to the right on top of the hill))).

2. Again thanks for the info - I thought lead buildup would fry the Cat. the exhaust noise is so sonically intense it feels like I have [the opposite of the bends] when I hit 60 in 3rd gear.

3. Yeah, there was a fuel line leak. I replaced the hoses that are connected to the T connector in the engine, but haven't looked at the lines under the car. The hoses were heater hoses that...well you know..corosives and rubber..so I'm kind of scared to see where else the hoses aren't proper grade...(I just bought the car at a charity auction, so there is no maintenance or repair history available)

4. Ahhhhh, the oscillating scraping sound was the water pump impeding the cooling fan, which later stopped altogether - thereby initiating a chain of events that ended in rush hour traffic with a plume of white smoke and the lingering smell of firecrackers.

Sigh..............on the up side: new water pump, new timing chain, tune-up and general integrity inspection - $500.00

towing fees from Downtown LA to South Bay $800.00 lol

[offabroadway]

Ouch, poor car. Ah well, at least you figured it out. The T connector on the engine was my problem too when I had the leak.