how do i know when my glow plugs need to be changed in my vauxhall astra cdti
no
Well you would need to buy new glow plugs...$$$$
Diesel trucks don't use spark plugs, they use glow plugs. For your tuck i don't know ecpesifcally which glow plug you need cause you never mentioned what your truck is.
They are under the rocker cover. You'll need to replace the rocker cover seal aswel if your replacing the glow plugs.
Your glow plugs are not heating up. You may have bad glow plugs or relay. try turning on the key ( this should start the warming of the plugs and a light on the dash will come on letting you know it is ok to start if not the relay is bad) if no luck turn off the key and let it cycle again. if it is still difficult to start you may need new glow plugs.
youcannot test glow plugs thru the coneector on valve cover you need to actually test the glow plug
recommended at 100,000 miles. mine had 88,000 miles and i changed them but they were in great shape.
Under the valve cover at the top right of the injectors for ecah cylinder, need more ask!
Depends on which diesel you are talking about. A 1993 or earlier the glow plugs located outside edge of the heads below the valve cover. 1994 through early 2003, the 7.3 turbo diesel engines the glow plugs are located in the heads but under the valve cover. You will need to remove the valve cover to retrieve the glow plugs. Basically the non turbo diesels have the glow plugs outside edge of the heads. In all turbo diesels you have to remove the valve covers to get to the glow plugs.
Glow plugs need electricity while starting the engine. After that, they do not use electricity, but stay red hot due to the heat of combustion and pressure within the cylinder.
No they do not, After engine is running there is no need for glow plugs because there is enough heat in the cylinders to warm the fuel. The glow plugs are designed to heat up the cold diesel fuel on start up only. Actually glow plugs will cycle briefly after engine start up to keep the cold fuel from bringing down cyl temp until the engine warms up. A power stroke will keep glow plugs on for up to 180 sec. A chev will run considerably less I believe.
Just changed my glow plugs. Quite easy you need an 8mm and 10mm deep socket. Take off the cover by removing the 4 location clips. There is a braket on the left hand side that is removed by taking the 3 10mm bolts out. there is a cable tray that you also need to remove attached to the bracket by the 10mm securing nut. Unplug the two electrical plugs on the left. You then have enough room to remove the cable 8mm nuts and then with the deep 10mm you can remove the glow plugs. Took me about hour and a half and I wasn't rushing.