1Y running rough after injectors have been out
Posted: 28 Aug 2011, 11:54
Afternoon all. I have a rough-running 1 Y, and having tried the basics to sort it, I now need some assistance please.
Yesterday I took off the fuel feed pipes from the fuel pump (Bosch) to the injectors, and also removed the two injectors nearest the rear of the van, to change the glow-plus as the ones I had were knackered. I then replaced the injectors (without changing the flame traps underneath them, which I fear I may now come to regret) and all associated pipework. On restarting the engine, I opened the fuel pipe union on each injector in turn to bleed them, and then opened the banjo on the fuel return pipe in order to ensure any air was expelled. This produced plenty of fuel, some of it "frothy".
On restarting, the engine is running fine at idle, although with a pronounced "knocking" or "popping" sound. When the throttle is advanced, the rev increase is accompanied by a quick burst of black smoke (which whilst not unusual from a diesel, wasn't there before) and a sound that I can only compare to a loud rattle (not dissimilar to a gattling gun but of course not as loud or violent!!), which diminishes when the revs are stable. There is however, some vibration from the engine, at both idle and across the rev range.
Am I running on less than the four, and is this *possibly* because I've cooked an injector or two by not replacing the flame traps on the two cylinders that I removed the injectors from?
Thanks in advance for any advice anyone can offer
Yesterday I took off the fuel feed pipes from the fuel pump (Bosch) to the injectors, and also removed the two injectors nearest the rear of the van, to change the glow-plus as the ones I had were knackered. I then replaced the injectors (without changing the flame traps underneath them, which I fear I may now come to regret) and all associated pipework. On restarting the engine, I opened the fuel pipe union on each injector in turn to bleed them, and then opened the banjo on the fuel return pipe in order to ensure any air was expelled. This produced plenty of fuel, some of it "frothy".
On restarting, the engine is running fine at idle, although with a pronounced "knocking" or "popping" sound. When the throttle is advanced, the rev increase is accompanied by a quick burst of black smoke (which whilst not unusual from a diesel, wasn't there before) and a sound that I can only compare to a loud rattle (not dissimilar to a gattling gun but of course not as loud or violent!!), which diminishes when the revs are stable. There is however, some vibration from the engine, at both idle and across the rev range.
Am I running on less than the four, and is this *possibly* because I've cooked an injector or two by not replacing the flame traps on the two cylinders that I removed the injectors from?
Thanks in advance for any advice anyone can offer