3.0l starting problem
Posted: Tue Jun 30, 2009 3:18 pm
Hi there, Thought i should share my experiences over the last few months with Nissan, over an issue i have had with rough starting. I spose firstly the moral of this story is go with your gut, it's probably right.
Anyway, the problem was with starting the engine cold. No matter how long i waited for the glow plugs to fire, whenever the engine was cold after sitting for a few hours, it would start on what sounded like 3 cylinders then after a few seconds all 4 would be going and it would smooth out. After several trips to nissan to get the car checked out. Timing checked, valve clearances checked, compression checked, return line vac tested. They still came up with no reason to the starting issue. All along i told them that i thought it might be either compression, air in the fuel or glow plugs. All were discounted and eventually they decided that the best course of action was to take the head off and replace the head gasket.
Looking dismally at the cost of this exercise i decided to check out the glow plugs and prove to myself it wasn't them. After a simple test of unplugging the glow plug relay, and then starting, it becam obvious that the glow plugs were to blame. With no glow assistance the engine took considerably longer to start however it started smoothly and on all cylinders.
A bit of probing later with the multimeter proved that the glow plug for cyclinder 4 was an open circuit.
Ater replacing that one glow plug with a spare that i already had, no problems whatsoever, smooth starts.
After spending money with nissan on various parts as they tried to eliminate the problem i feel rather stupid. One for not trusting my gut, and two for trusting trained mechanics servicing a vehicle of thier own making.
I hope no one else has to waste money and time like this, however i won't hold my breath.
Cheers
Anyway, the problem was with starting the engine cold. No matter how long i waited for the glow plugs to fire, whenever the engine was cold after sitting for a few hours, it would start on what sounded like 3 cylinders then after a few seconds all 4 would be going and it would smooth out. After several trips to nissan to get the car checked out. Timing checked, valve clearances checked, compression checked, return line vac tested. They still came up with no reason to the starting issue. All along i told them that i thought it might be either compression, air in the fuel or glow plugs. All were discounted and eventually they decided that the best course of action was to take the head off and replace the head gasket.
Looking dismally at the cost of this exercise i decided to check out the glow plugs and prove to myself it wasn't them. After a simple test of unplugging the glow plug relay, and then starting, it becam obvious that the glow plugs were to blame. With no glow assistance the engine took considerably longer to start however it started smoothly and on all cylinders.
A bit of probing later with the multimeter proved that the glow plug for cyclinder 4 was an open circuit.
Ater replacing that one glow plug with a spare that i already had, no problems whatsoever, smooth starts.
After spending money with nissan on various parts as they tried to eliminate the problem i feel rather stupid. One for not trusting my gut, and two for trusting trained mechanics servicing a vehicle of thier own making.
I hope no one else has to waste money and time like this, however i won't hold my breath.
Cheers