Really stuck glow plugs and how I managed to remove them without breaking any! Part 2
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- čas přidán 6. 09. 2024
- Step 1: put lots of WD40 or any other solvent few days before
Step 2: try to remove them with engine warm
Step 3 take it easy, don`t apply to much pressure in one twist, just do it in little steps (it took me few hours in 2 days to remove all 4)
Step 4: if you managed to unscrew and is still stuck, just apply lots of WD40 and keep turning with engine idling, insist until it will get loose. With idling rpm will not do any damage. Internal pressure combined with twisting will brake the carbon builds and release the glow plug.
Step 5: for new glow plugs I used high temp ceramic paste. Is a good idea to clean the holes and tapper if you have access.
Hope this advices help you.
Idling the engine while removing a glow plug could be a very useful tip.
For anyone (like me) who's trying to learn about this job as much as possible before trying it I have a suggestion. Get hold of some old glow plugs (A friendly garage might help with some they're just going to bin anyway), clamp them well in a vice and practice snapping them with an ordinary socket wrench and/or torque wrench. The idea is just to get a feel for how much torque is needed and to see where and how they break.
Another tip (from working on old wooden doors) is the tap-n-twist method used to remove those awful old screws with just a worn and rusty slot to apply torque to. Using a hammer, tap rapidly the end of your screwdriver as you apply a firm twist anticlockwise. The "rebound" to each tap actually pushes the screw back up, aiding your unscrewing in the process.
Some have applied this method to glow plugs. I'm not sure it works in exactly the same way but it seems to help - perhaps by breaking up the seal between the plug and engine around the threaded part or the shaft between the thread and the exposed tungsten core which sits inside the cylinder. Be careful not to strike too hard or onto your best ratchet though - might damage the mechanism. Probably best just to use a simple wrench or just the extension.
This is a common issue with these Mulitjet engines. The thread tolerances are very tight and the carbon and soot becomes acidic which eats into the cylinder head bores and makes the plugs very difficult to remove.
John is wrong. This is an awesome video. I have the same problem and this gives me insight. You can hear the wrench jerking as it turns and it is brilliant to run the engine so the compression in the cylinder is pushing on the plug.
How can it turn so many times? Is the ratchet slipping?
not the ratchet was slipping, glowplug was stuck in the block and moving just 1-2 degrees at a time. the carbon buildup seems massive on that particular engine. broked few flexible joints on that day, but was happy none of the glowplugs broke.
Braking = Slowing down or stopping with brakes..... Breaking is the word you want ;-)
Bei meinem Lancia Ypsilon 1,3 Multijet 16V ist die Kerze Nummer 2 defekt und die Werkstatt meint man müsste den Turbolader ausbauen. Neben diesem Video habe ich schon ein weiteres gesehen wo deutlich wird, das war nur das hitzeschild über dem Turbo abbauen muss um besser heranzukommen. Mein Fahrzeug hat jetzt 92000 km der Wagen startet im Winter auf drei Töpfen nagelt trägt laut läuft dann aber nach einer gewissen Zeit rund. Die Anzeige für defekte Glühkerzen erlischt nach ca 20 Sekunden. Ich möchte das Problem gelöst haben und hoffe, dass es hier jemanden gibt der sich wirklich mit diesem Motor auskennt und mir helfen kann. Es soll einen guten druckluftschrauber geben der mit vor und zurückdrehen und wenig Drehmoment oft Erfolge bringt. Ich komme aus Berlin und bin für jeden Hinweis auf Werkstätten sehr dankbar
How long is that thred.?
Not sure the depth in the block but it tooked forever 😅
Not a very good video, sorry.
It worked for me, tried everything else and couldnt remove them. Also there is not a lot of access to the glow plugs. But I am not an expert, I made this video because I never saw similar issue and solution on youtube...