What will happen if i accidentally put unleaded petrol in my 2004 carrera 4s instead of super unleaded?

Drain the fuel out and flush the fuel lines and the filter. Failure to purge the unleaded fuel from the system can destroy the engine due to severe pre ignition.

depending of the year either the ground on the gas tank is bad or the fuer sensor is bad in the tank.

easy to check. look under the vehicle close to the manifold and if you see an oval shaped stainless steel containerther you most likely will have a c/c. next point if you use leaded in a unleaded vehicle it will affect the catalytic converter buy causing it to block up.next the oxygen senson may be contaminated and not sending the right readings to the cpu so the engine management system will be affected. Best have it checked at a dealer before you do any more damage.

Behind the passenger side wheel covers, up towards the front bumper, is a stainless steel braided cable with a loop. Pull this to manually open the trunk. It is well hidden and an emergency solution to opening the trunk if the servo has failed, your fuse box power connection fails, or you have no power. Good luck

As a modern car it will run fine on any unleaded gas/petrol and the engine will self-adjust it's ignition timing to suit.

But some Passat variants can additionally take advantage of Super Unleaded, it's a total waste of money and offer no benefits at all for most models. As you haven't given further details of your exact Passat variant I cannot be any more specific, but the recommended grade is usually on a label inside the tank filler door.

I would run a couple of tanks of the new gas through it, and see if it clears up. This will give the sensors and and modules a chance to discuss and accept it.
Hope this works for you.

You need to remove tank from vehicle and drain. Then take UNLEADED and put 2 gallons in rinse with unleaded redrain and then reinstall and put gas in. This will prevent engine damage.

Usually the specs are located in the owners manual. It tells you the grade and amount of oil required on an oil change. If the specs are not in the owners manual, you can look at the oil fill port on the engine and normally has the recommended grade of oil. Otherwise, see if you can get your hands on a service manual. Good Luck.22

A Yaris can run on the lowest grade, Regular unleaded. You don't need super

hello matilda,

im not sure if the reason is the leaded gasoline that you put, but if you want to replace the gasoline in the tank, you can trace if there is a drain bolt under the tank then drain the gas in the tank. be safety consious since your handling flamamble liquids. then if you can trace your fuel line that goes to the engine, you can flush that too with air. then when your sure that the tank is empty and the lines are clean, you can fill it up with your correct unleaded gas and have a good battery ready and crank your engine until the new gas is in the engine already and i hope it would start now.

i hope i was able to help you.

pls rate me..

tnx

drcool