Well it is er all about that there um electrickery innit?

Don't feel bad about not knowing the technical lingo - you'll get there in the end.

(All I can say is that my M102 works that way)

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Unplug the vacuum line going into the fuel pressure regulator, see if its wet with the fuel. Seen more than a couple fail on 60*s.

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68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500

Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i

I think you're overlooking the easiest fix.

Dye your hair grey and drive around 15 mph under the speed limit with your left blinker on for the entire day. As Buick intended.

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1980 300TD-China Blue/Blue MBTex-2nd Owner, 107K (Alt Blau) OBK #15
'06 Chevy Tahoe Z71 (for the wife & 4 kids, current mule) '03 Honda Odyssey (son #1's ride, reluctantly) '99 GMC Suburban (255K+ miles, semi-retired mule) 21' SeaRay Seville (summer escape pod)

i would place my bet on o2 sensors. a sensor can often be "lazy". you have to remember, this is an obd1 car. obd 1 is a whole lot dumber. does the coolant temp read properly on the dash?

if the temp is not reading correctly, it could be failing to go into closed loop mode. hence the raw fuel smell. you really are working blindly without a scan tool that has live data mode.

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have no worries.....President Obama swears "If you like your gun, you can keep it

A long shot but known to be a problem is the intake manifold gasket. These start to leak for some reason and all sorts of weird things will take place since the air/fuel ratio is always trying to correct itself.

A quick and actually safe way to find such a leak is to pick up a tool that looks like a long thin pipe on the end of a hose. The other end of the hose connects to a propane tank like the propane torches use. Start the engine and crack the valve on the propane tank so that a very small amount of propane is coming out.

Then wave the end of the pipe with the propane feed close to the intake manifold bolts and runners. If you hear an increase or decrease in RPM you have found a leak where the engine is sucking in air and, in this case, propane. Check all the vacuum connections in the same way. Any change in RPM is a leak because the additional propane screws up your air/fuel ratio.

Mechanics do this all the time. It sounds risky but I don't think you would have any problem with doing this in a safe manner. This also has the advantage of being repeatable. You engine may change RPM at odd times but with this method every time you move the pipe to the same spot the RPM will change.

This should be moved to P&R since it will take hopey and prayer not get blowed up

Interesting test, but I have no propane on hand... I already have the (improved metal) gaskets, so it's just a matter of time before I install them. I figure, though, that the smell of fuel is probably due to something else.

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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."

His car should have a 7730 which is a pretty decent ecu for OBD1 american cars.

Does your car have a temp gauge? I had a thermostat stuck open on a Fiero with a 60* and it would never go into closed loop.

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68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500

Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i

I did that a few days ago and it was bone-dry... and then I realized that I would probably be better off doing it right after running the car, and not when it's been sitting for a few days. So I'll do it again today.

I'll check & see what the FSM says about the O2.

The car has a temp gauge, and the temp is absolutely spot-on.

__________________
"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."

The FSM says the the PCM will tell me if the O2 sensor shows a lean or rich condition.

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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."

Take a fuel pressure reading then call me in the morning.A fuel pump can become weak before giving out all together.Not the same car but A Mercedes 190e common issue ,I dont know if thats why they started installing 2 pumps on their setups after 1985 but Ive owned a few to find out how this can become an overlooked issue.Do this if your check list starts to dwindle down .I believe a diagnostic cost from a shop is just one hr of labor ,this would be well worth the cost for the fact they might catch other items that might leave you stranded paying for a tow, older cars are great as long as their not on back of a tow truck for simple small shi% .Does a Buick have a flux capasitor?

i would normally agree, however i had a 190e a few years back that never set a dtc or lit the o2 sensor light. was running so rich, it burnt the cat out. i had even hooked a meter up to the sensor and saw it changing between rich and lean. threw everything else at it. finally decided at the last to replace the o2 sensor. completely different car after that.

the o2 sensor is constantly changing between rich and lean. a lazy sensor could be favoring the rich side. ( higher voltage)

you need to find someone with a scanner that will do live mode, preferably mode 6 data. often times there will be a misfire present, but it doesnt cause enough misfire counts to trigger a dtc.

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have no worries.....President Obama swears "If you like your gun, you can keep it

i had a camry that had the same symptoms.the pcv valve was plugged.

also, the fuel pressure regulator test can be done while running.

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have no worries.....President Obama swears "If you like your gun, you can keep it

Sell it and beat around in the Camry.

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-Justin

91 560 SEC AMG - other dogs dd
01 Honda S2000 - dogs dd
07 MB ML320 CDI - dd
16 Lexus IS250 - wifes dd

it's automatic.