Hard start after injector reinstall
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Cross-Country
Joined: Mar 2008
Posts: 73
Likes: 1
Hard start after injector reinstall
Hello- I am new to this forum- and PSD's and need some help.
I pulled an injector due to a glow plug falling into the bore (wich made it pretty easy to pick it up with a magneto on a slightly bent telescopic rod) and experience hard starts after reinstall. I did not put in new injector o-rings. Is this the reason it takes 5-10 seconds for it to fire? Or is it only air trapped in the system that needs to be worked out? Eventually how? Or will it cure itself? There is clear to me that there is a fuel issue as there is no smoke coming out of the tail pipe before it decides to fire. No blue smoke when driving it eighter.
Truck ran fine prior to injector pull.
Thanks!
I pulled an injector due to a glow plug falling into the bore (wich made it pretty easy to pick it up with a magneto on a slightly bent telescopic rod) and experience hard starts after reinstall. I did not put in new injector o-rings. Is this the reason it takes 5-10 seconds for it to fire? Or is it only air trapped in the system that needs to be worked out? Eventually how? Or will it cure itself? There is clear to me that there is a fuel issue as there is no smoke coming out of the tail pipe before it decides to fire. No blue smoke when driving it eighter.
Truck ran fine prior to injector pull.
Thanks!
Logistics Pro
Joined: Jul 2001
Posts: 4,137
Likes: 41
From: Marble Falls, Texas
First and foremost, welcome to the forum. We're glad to have you.
Okay, when you pulled the injector most likely all the oil and fuel drained into that cylinder right. Then you evacuated it by sucking it out, or leaving the glow plug out and turning it over by hand....
Anyway, the point I was trying to make is this. Since all your oil for the high pressure system drained, it now has air in it. Yes, it will take some time to work it's way out. I would have put new orings, but in a pinch I guess if they were okay it should be alright. But that won't be your problem unless they were damaged. Usually it takes 30 to 40 miles of driving to work it out. And most guys here will tell you that you need to really run the crap out of it to purge air. Either way, it will purge itself and should return to running just as well as it did before.
So don't worry about the hard start, it happens to everyone who pulls injectors. It's just a fact of these motors. Don't stress. Just run it for a while and let us know how it goes. If the problem persists, I would go back with new orings. But I bet you a dollar you will be just fine.
Okay, when you pulled the injector most likely all the oil and fuel drained into that cylinder right. Then you evacuated it by sucking it out, or leaving the glow plug out and turning it over by hand....
Anyway, the point I was trying to make is this. Since all your oil for the high pressure system drained, it now has air in it. Yes, it will take some time to work it's way out. I would have put new orings, but in a pinch I guess if they were okay it should be alright. But that won't be your problem unless they were damaged. Usually it takes 30 to 40 miles of driving to work it out. And most guys here will tell you that you need to really run the crap out of it to purge air. Either way, it will purge itself and should return to running just as well as it did before.
So don't worry about the hard start, it happens to everyone who pulls injectors. It's just a fact of these motors. Don't stress. Just run it for a while and let us know how it goes. If the problem persists, I would go back with new orings. But I bet you a dollar you will be just fine.
Post Fiend
Joined: Mar 2007
Posts: 9,010
Likes: 5
From: Johnson City, TN.
I spoke with DZL JIM and he told me that after my injector install I need to drive it about 100 miles before it runs proper. Put it in a lower gear and drive it for awhile at higher RPM's.
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Cross-Country
Joined: Mar 2008
Posts: 73
Likes: 1
Thanks guys! I noticed this morning that it actually fired easier than it did yesterday, and it keeps getting better!
Yep Rubber Duck the oil and fuel drained into the cylinder and I sucked it up, pulled fuse #9 and glowplug and sprayed the remaining oil/fuel all over the place
before I fired it again. Thanks for helping!
Yep Rubber Duck the oil and fuel drained into the cylinder and I sucked it up, pulled fuse #9 and glowplug and sprayed the remaining oil/fuel all over the place
before I fired it again. Thanks for helping!
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