Club126UK
Fiat 126 Chat => Fiat 126 Mechanical Problem Solving => Topic started by: ciaoflyer on November 02, 2011, 09:23:38 PM
-
Will the problems never end!
Got ready to leave for work and the car would not start this morning. Had to bump start and then it was running on one cylinder. Limped round to my mum and dads and took their car to work. Got back and car started on both but one kept cutting out.
Am I right in thinking that it is either a spark plug or HT lead that is at fault? Could it be anything else?
-
Sounds like a blocked fuel injector to me :P
Spark plug, ht lead, dizzy cap
-
Sounds like a blocked fuel injector to me :P
Spark plug, ht lead, dizzy cap
What would be wrong with the dizzy cap?
-
Check the top of the plug itself isnt loose , happen to me more than once now !
-
Un even wear, dust, oil, the terminals inside get a glaze over them a rub over with a piece of fine wet n dry should sort this.
Not seated correctly.
-
Crack in dizzy cap or tracking in cap.
-
I had a problems like that when I had a 1962 Fiat 600D. For what it is worth, here goes. It could be the spark plug or the HT wire. Try switching the HT wires to see if one of them is faulty. If both are okay. It could be the spark plug, but when was the last time you changed the plugs? Remove the spark plug in the problem cylinder. Fouling is a common cause of ignition misfire. Examine the end of the plug. If the electrode is covered with deposits, clean or replace the spark plug. Also, note the type of deposits on the plug. Hopefully, the deposits on the plug is not thick, black, wet or oily-looking deposits. Try switching the plugs as well. It could be the distibutor cap. Inspect the cap for cracks. If all the aforementioned are good, it could be the ignition coil.
-
Right, replaced spark plugs only at the moment seems to be running ok. However, as I drive around it will suddenly stall as I take my foot off the accelerator and slow down. Beginning to think it as fuel fault now. Any thoughts?
-
Replaced Plugs, Points and Condensor, timing is now spot on but still stalls at idle, is this now a fuel fault?
-
Does it run fine until you come to stop?
-
See my post (oct31, missing carb bit) Had to make pivot post myself, but seems to have been fine the last two weeks (daily driver). The heat exchange pipe breaks where it meets the exhaust below the carb, heats the back of the carb, if your pivot is a bit stiff, it will allow it to fall out (my explanation, so not necessarily correct, no one else seems to have posted about this)
It is the vacuum linkage and lever at thee back of the carb, could possibly be just the ht lead fouling the vacuum linkage.
-
HHMMM intresting! Yes it only stop when I stop!
-
Check the ht lead isn't fouling the vacuum unit first.
If it is the pivot, I ground a 10 mm bolt down, the end in the carb is 9 mm, the linkage pivot is 10 mm, they are offset so you need thread still showing on the top of the 9mm section, would recommend using a larger diameter bolt to give a greater offset,(had to hermetite in a picture hook to push it down a little more). Stuck it in with red hermetite.
If you find the right part, please send me the link.
Assume it is an idle enrichment system.
Marc
-
And the spacer washer is also 9mm.
Found the washers in the carb base plate, pivot was missing though.
-
Or, could just be vacuum pipes or unit.
-
Just reread full thread, probably ht lead (the one furthest from the back of the car) fouling the vacuum unit.