D24TIC - Starting problem - glowplugs fine...airflow??

jaydbass · Oct 6th, 2011, 23:53

Had to call out RAC Homestart a couple of days ago as the Beastie wouldn't start. The engine seemed to be catching but just not firing up. Glow plugs checked out okay, as did the injectors/fuel supply. Patrol checked air hoses and felt there was a lack of air to the engine for starting. He examined various hoses etc and the engine eventually fired up as he was squeezing the large black hose which runs from the engine towards the radiator. He had a look at the turbo as well, as he thought it was sluggish. Said it was a bit gummed up/worn, but with a bit of tinkering and engine revving it seemed to kick in better. He also said he thought the wastegate was sticking. Possible diagnosis was a blockage in the airflow which had cleared.
Car has been driving really well recently (apart from the bizarre issue in my last thread) and now the turbo response has improved it's smoother and more responsive. BUT... the starting problem has remained when the engine is cold. It takes about 4 or 5 long cranks to get the engine half running and whimpering; then it takes about 10-15 seconds before she kicks in and fires up properly. It's as if the throttle doesn't really work until then - despite a lot of grey/brown smoke. I'm hoping it's nothing major....

jor · Oct 8th, 2011, 17:40

Mine only gave problems when the glowplugs went. How did you test yours? The other thing that comes to mind is the cold start device, adjustment of which requires a dial indicator and pliers, rotating the cable until timing increases 0.2-25mm.
The 'unmentionable' is compression, but the only poster referring to to this that I could find had problems with hot starts as well.

jor

jpliddy · Oct 8th, 2011, 18:35

hi
i change my glowplugs at 5 years max all 6 . this engine will only let you down when the winter is at its worst with glow plugs . trust me you dont want to get caught out . i have read the glow plug relay can start to fail i think it can be tested . i dont know much about it .

Oct 6th, 2011, 23:53	#1
jaydbass recent volvo owner Last Online: May 31st, 2013 14:15 Join Date: Jul 2007 Location: Erskine View Photos By: jaydbass	Starting problem - glowplugs fine...airflow?? Had to call out RAC Homestart a couple of days ago as the Beastie wouldn't start. The engine seemed to be catching but just not firing up. Glow plugs checked out okay, as did the injectors/fuel supply. Patrol checked air hoses and felt there was a lack of air to the engine for starting. He examined various hoses etc and the engine eventually fired up as he was squeezing the large black hose which runs from the engine towards the radiator. He had a look at the turbo as well, as he thought it was sluggish. Said it was a bit gummed up/worn, but with a bit of tinkering and engine revving it seemed to kick in better. He also said he thought the wastegate was sticking. Possible diagnosis was a blockage in the airflow which had cleared. Car has been driving really well recently (apart from the bizarre issue in my last thread) and now the turbo response has improved it's smoother and more responsive. BUT... the starting problem has remained when the engine is cold. It takes about 4 or 5 long cranks to get the engine half running and whimpering; then it takes about 10-15 seconds before she kicks in and fires up properly. It's as if the throttle doesn't really work until then - despite a lot of grey/brown smoke. I'm hoping it's nothing major.... __________________ N-reg 940 turbodiesel estate (classic) - "Big Beastie" (now deceased) M-reg 940 estate (SE) LPG/Petrol (awaiting scrappage) 1998 S70 CD 2.5 auto LPG/petrol

Oct 8th, 2011, 17:40	#2
jor VOC 20573 Last Online: Jul 10th, 2023 22:14 Join Date: Mar 2007 Location: wembley	Mine only gave problems when the glowplugs went. How did you test yours? The other thing that comes to mind is the cold start device, adjustment of which requires a dial indicator and pliers, rotating the cable until timing increases 0.2-25mm. The 'unmentionable' is compression, but the only poster referring to to this that I could find had problems with hot starts as well. jor __________________ Volvo 940 SE 1994 D24Tic. BMW C1 85 mpg

Oct 8th, 2011, 18:35	#3
jpliddy VOC Member Last Online: May 3rd, 2024 14:15 Join Date: Dec 2006 Location: stoke on trent	940 tdi auto 1995 hi i change my glowplugs at 5 years max all 6 . this engine will only let you down when the winter is at its worst with glow plugs . trust me you dont want to get caught out . i have read the glow plug relay can start to fail i think it can be tested . i dont know much about it .

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