iain1234

Thank you for all your input. I did the pressure test to confirm an engine problem and for a better understanding. There was a chance, or hope, that I had made an error; for example, I may think I had swapped coils but had not. And I have never done a pressure test before. Unfortunately, the car is not worth fixing due to cost and age. But this Fabia does not have that high a mileage compared to other 1.2 petrol engines of a similar age for sale online. For my better understanding, would you expect an increase in pressure in an older engine with oil without any engine fault?

Hello Forum Finally been able to do a basic compression test 1.2 petrol 2004 Fabia 54hp 66k miles The ECU indicates P0301 cylinder 1 missfire After small amount of oil in each cylinder I only turned the engine over with the starter motor for the tests. Compression test results Oil Cylinder 1 50 100 Cylinder 2 130 180 Cylinder 3 50 100 Pressure was not lost from any of cylinders quickly, but i was turning engine so cannot say if the pressure started low and remained low while turning the engine? This engine is known to often get exhaust valve problems i believe What supprised me cylinder 3 compression being as bad as cylinder 1? As no code for cylinder 3. Maybe the increase inpressure after oil was put into each cylinder is missleading normal for 66k engine. If it was two adjacent cylinders eg 1 and 2 possible indicating headgasket fault, but its 1 and 3. After adding oil will the cylinders piston rings return from 100 to 50 sooner than later? I have read if pressure starts low and remains low indicates valves need look at this next. Wishing you all a happy New Year. Iain

Hello Pete thank you for the advice I have taken couple photos of what i think is the coolant temperature sensor the electrics partly unpluged so spot purplein the photos it was hidden partly from view with air intake hosing to the air filter removed I was going to unplug the coolant temperature sensor it so it does not give a false high temprature , (low resistance) as a temperary fix while i see if the P0301 is now fixed after plug change. The plug in one was sooty black (i have read over rich fuel air mix for some reason) rather than oil black if that makes adifference to the advice on the cylinder compression. thank you iain

Hello Forum Not sure where to look for the Fabia 1.2 petrol 54hp 66k miles petrol Engine coolant temperatures sensor 1 location? possibly the Cylinder head? As the P0118 code can appear and the engines not even warmed up, think sensor needs replacing. Also have a P0301 cylinder 1 missfire which does illuminate the dash and reason the P0118 has been discovered. P0301 might possible consequence of the P0118?? as the P0118 does not bring up an indication on the dashboard and could been going on for along time. The car is only normaly used for a 6 mile round trip to town at low speed. Have just replaced the spark plugs, spark plug in cylinder 1 black soot others two plugs clean. Previously tried swapping ignition coils 1 & 2 fault still on cylinder 1 P0301 when the car packs up. Air filter clean The old plugs were cheap nickle I have replaced with some iridium. Since replacing the plugs rather than just cleaning plug 1 believe the car is running smoother after running for a few minutes. I do not know how sophisticated a 2004 car would be could the car automaticaly adjust the timing with new plugs via ecu as it did not happen straight away the ecu adjust new plugs? Can a car this old reveal more via vagcom ecu reader? thank you iain

Hello Fabia Mark 1 Forum GetTing an engine management cylinder 1 misfire P0301 Though it would easy to find out the cylinder layout online, but so far no sucess Fabia 1.2 petrol cylinder layout Is the cylinder layout from left to right viewers perspective is it 1,2,3? I disconnect intentionally the coil on the left and got coil A fault, not a cylinder number. Anyway i thought its worth try i swapped the coil on the left with the middle coil. Now need to run the engine for a while to see if still got the fault the faults moved cylinders so a coil fault. Thank you iain