Glow plugs have a long lifespan, however they do gradually deteriorate due to wear and tear. So how do you know if a set of glow plugs needs replacing?
Hõõgküünal Isuzu jaoks 8-97043744-0 8-94387612-1 8-97044037-0 Pi-59 84mm 11v
Selles artiklis vaatleme kuut levinud märki, mis näitavad, et hõõgküünlad võivad olla rikkis või kahjustatud.
Something's wrong: the engine warning light
The engine warning light on the dashboard is often the first clue that something is wrong. Vehicles displaying this light should be taken to an authorised workshop for proper diagnosis and service as soon as possible. A number of faults can cause the engine warning light to illuminate – below, we outline the clues which point to faulty glow plugs.
Raske algus
A hard starting engine is the most common indicator of damaged glow plugs. In cold conditions, without correctly functioning glow plugs, the combustion chamber may not reach the right temperature to ignite the fuel and start the engine. If there are no problems with the fuel or the battery, then glow plugs should be checked.
Mootori süütehäired
Diiselmootorite põlemisprotsess nõuab suurt survet, õigel ajal ja õiges koguses kütust sissepritsimist. See süütab diislikütuse, mille tulemuseks on põlemine. Süütetõrkeid võivad põhjustada probleemid kütuse kvaliteediga, kompressiooniga ja kütuse sissepritsega.
Karm tühikäik
If one or more glow plugs have burned out, are carbon fouled or damaged, the engine will become progressively harder to start as temperatures drop and will idle roughly and produce white smoke from the exhaust for several minutes once it finally starts. If all the glow plugs are burned at their tips, check the fuel injection timing.
Vähenenud kütusesäästlikkus
Temperature and fuel usually determine fuel efficiency, not glow plug performance. However, in some cases, glow plugs do have a role to play.
Based on local climate, diesel may be blended with specific additives during the cold months to lower its freezing point. The blended fuel will most likely have a lower energy content and provide reduced fuel efficiency. Engine operating temperatures should be adjusted to ensure all the injected fuel is completely burnt. Glow plugs help to provide the additional heat in the combustion chamber.
Hõõgküünal Isuzuv 5-81410044-0 Pi-53 95mm 20,5v
If the required temperature is not reached due to faulty glow plugs, the engine's performance will be weakened, and it will have to work extra hard to meet the demands of the road. The vehicle's fuel efficiency will be negatively affected.
Kui autol on ilmnenud muid siin loetletud sümptomeid ja ka kütusesäästlikkus hakkab vähenema, tuleb see võimalikult kiiresti õigeks diagnoosimiseks ja hoolduseks viia volitatud töökotta.
Valge suits
White smoke usually occurs when there is not enough heat to burn the fuel. The unburnt fuel particles travel out of the tailpipe as smoke and typically produce a rich fuel smell. It's not unusual to see white smoke from the exhaust during cold weather, until the engine has warmed up.
Hõõgküünal Isuzuv 8-94439218-0 Pi-55 89mm 5v
Kahjustatud hõõgküünlad või vigane hõõgküünla juhtmoodul võivad mootori käivitamisel põhjustada valget suitsu. Liigsel valgel suitsul on ka palju muid võimalikke põhjuseid, sealhulgas mootori madal väntamiskiirus, madal surve ja õhk kütusesüsteemis. Kui pärast mootori soojenemist on endiselt näha valget suitsu, võib mootoril olla üks või mitu vigast pihustit, aeglustunud sissepritse ajastus või kulunud sissepritsepump.
Must suits
Black smoke is caused by an imbalance in the air-fuel ratio – too much fuel and not enough air. This means either too much fuel is being added to the mix or there is not enough oxygen being supplied to burn the fuel. Faulty glow plugs may disturb the sensitive diesel combustion process, which in turn might result in the engine producing black smoke from the tailpipe. This is a warning sign that something is wrong either with the glow plugs or other vital components of the combustion process.
