It is very unlikely that an ECU issue would cause the above problem, and would certainly not affect mk2 and mk3 GTIs due to their distributor-based ignition system.
Not running on all cylinders is primarily due to a lack of spark on the affected cylinder.
On earlier vehicles (including GTIs with mechanical injection and no ECU) the spark may not form at the spark plug due to * a broken spark plug * a broken spark plug lead (commonly referred to as a high tension/HT lead) * damaged insulation on an HT lead (allowing the high voltage to find a path to the vehicle's electrical ground) * a damaged/worn distributor cap Later (distributorless) vehicles can have problems with coil-packs (as seen on the VR6 engines) or coil units (as seen on the 1.8T engines).
Any vehicle with a faulty ECU is most likely to either not start at all or run in LOS mode. LOS stands for Limited Operation Strategy and is comparable to 'Safe Mode' on a home computer. In this mode the car should still run, albeit with reduced power output. LOS mode is usually triggered by the ECU detecting a fault condition, faulty sensor or faulty actuator. LOS mode would not cause the vehicle to run on fewer cylinders.
It would have either a 2.0l sohc or a 2.0l dohc. Both are inline four cylinders.It would have either a 2.0l sohc or a 2.0l dohc. Both are inline four cylinders.
Four cylinders, four mikuni carburetors and four pipes. Lotsa info on wikipedia.
The distributor may be faulty or have a crack, there may be a disconnection or a dirty connection from the distributor to the spark plug (s). The connections on the distributor may be corroded. Some where there is a break in the power train in the non-firing cylinders.
All the gasoline/petrol models have four cylinders. From 1999 - 2005, the diesel engines had three cylinders; from 2006 onwards, they had four.
blown head and loss of comperession in two of the four cylinders
No, only the faulty one, the fault code will tell you which is faulty.
In theory, it could, but in all practicality, it would not. The four main causes of misfires are faulty sparkplugs, bad spark plug wires, bad fuel injectors or a loss of compression.
Four or six.
The four main shapes are cylinders, crystals, spheres, and spacecraft.
This engine (allowing it is an automotive engine) is a four valve per cylinder engine.
on a lot of gm cars cylinders 1 & 4 fire off the same coil.
A V8 engine has eight cylinders, in a 'V' configuration, four on each side.
in the US, four and six
There are ( 4 engine cylinders ) in a Ford Ranger 2.3 litre four cylinder engine
Either ( 6 cylinders ) with the 3.0 liter and the 4.0 liter V6 engines or ( 4 cylinders ) with the 2.3 liter four cylinder engine
No v8 has 8 cylinders
You may have a blown head gasket. If you have a compression tester available, check compression on all four cylinders andcompare the readings. If adjacent cylinders read lower compression than the other two, it is likely the head gasket is blown.
Depends four cylinders have 4 and six cylinders have 6 is the only two motors the optima have.