Question about 1987 Volkswagen Cabriolet

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Gas my car is wasting to much gas is a cabriolet 87 I just change the oxs, spark plugs and filteres

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Looks you fuel tank and your gas line for rust

Posted on Oct 19, 2008

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Loss of mpg on 2006 legacy Subaru


A dirty air filter will prevent adequate air from entering the engine thus reducing gas mileage. Worn spark plugs or a weak spark (defective spark coils) can do the same. A defective "upstream" oxygen sensor (in the exhasut system) can lower fuel mileage. It forces the engine computer to guess at combustion efficiency without feedback from the sensor. It will err on the "rich" side to save the engine, which means it wastes gas. A "check engine" light will be "on" if that is the problem.

In winter, more alcohol is added to gasoline in cold climates to due to the lack of photosynthesis in the region (to make oxygen for us to breath.) Reduced fuel mileage results. Alcohol burns cleaner (and cooler) but it contains less energy (BTU) per gallon than "straight" gasoline. For example, E85 won't take you as far as a tank of regular gasoline.

If your car is designed to use 87 octane fuel, there is no need to use higher octane fuel. Higher octane fuels are for "high performance" engines with increased compression ratios. High octane fuel burns "slower" in the cylinder (to help avoid "detonation") so that the engine can take advantage is its greater compression ratio and advanced igntion timing to make more power. If your Legacy has a turbo, it will likely require the use of premium gasoline to avoid "detonation" under boost. Otherwise, "cheap", 87 octane gas is fine.

Feb 11, 2015 | 2006 Subaru Legacy

1 Answer

Truck won't start acting like it has no gas, put new filter on, new coil, and new distributer and poures gas carb and still won't start any ideas? It's an 87 dodge d150


If you know for sure you getting fuel, then go to the spark plugs. I assume you have already checked for spark. So the plugs are probably gas fouled. replace then.

Oct 10, 2014 | Cars & Trucks

1 Answer

Porsche 911 targa at idle it would spit and drop off but not stall .it drives and revs fine


It could be something simple like bad spark plugs, clogged air filter, or bad gas. Start troubleshooting there first and see if the problem gets any better.

Aug 16, 2012 | 1989 Porsche 911 Cabriolet

1 Answer

I have a 1986 toyota 4x4 pickup. It starts fine and idles good but when you step on the gas the motor acts like it is flooded. I checked the timing changed the spark plugs and the fuel filter and no change...


Had the same problem on an 87 pickup not 4x4. Check the rubber fuel line from the tank to the engine, mine was so old that when the engine tried to **** a lot of gas the rubber line collapsed and restricted the amount of gas getting to the engine.

Sep 15, 2010 | 1985 Toyota Pickup

2 Answers

Size of the fuel tank on 85 volkswagen cabriolet.


think its about 40/50 lts --8 to 10 gallons

Aug 05, 2009 | 1985 Volkswagen Cabriolet

2 Answers

Hesitance when pushing on the gas pedal


Is it a Twin Cam?? Does it Have a sharp miss at launch??

Mar 20, 2009 | 1995 Saturn Sl

1 Answer

One cable is not sparking contniuously


Autozone auto parts will scan your computer for free...start there...then do a major tuneup...plugs, dist cap and rotor, wires, pcv valve, Ox [O2] sensor in exhaust every 60,000 miles...GAS FILTER!!! soooo important with fuel injected autos...every 12,000 or 15,000 miles. If gas filter is not changed the fuel pump has to work sooo much harder!!! Then it dies... start me up!!!

Nov 08, 2008 | 1996 Chevrolet Cavalier

1 Answer

Cylinder 1 misfire


Change the spark plug, you might as well change all of them while you are at it.  Don't worry about the half full tank of gas, just run the car as low as you can and then refill with 87.

Oct 05, 2008 | 2003 Toyota Corolla

1 Answer

1985 VW Cabriolet


Possibly a clogged catalytic converter. Even if it is clogged it can be irratic. I had a muffler shop check it by cutting a hole before it with a torch, changed it out and i was good to go.

Jul 11, 2008 | 1985 Volkswagen Cabriolet

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