How hard to replace injectors? - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 03-02-2014, 07:43 AM Thread Starter
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How hard to replace injectors?

going to replace injectors with swamps stage 1 and glow plugs while Im at it. My truck came from texas so I doubt the previous owner ever touched the glowplugs. I keep hearing scary stories at old glow plugs breaking off in the head. The Injector changing seems a little complicated too. Im mechanically inclined but would you have a diesel shop do it that has experience?
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post #2 of 8 Old 03-02-2014, 08:06 AM
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Originally Posted by rosshurlow1 View Post
going to replace injectors with swamps stage 1 and glow plugs while Im at it. My truck came from texas so I doubt the previous owner ever touched the glowplugs. I keep hearing scary stories at old glow plugs breaking off in the head. The Injector changing seems a little complicated too. Im mechanically inclined but would you have a diesel shop do it that has experience?
i have done my injectors and glow plugs multiple times. my truck has 344,000 miles on it and the glow plugs came out just fine, even for being autolites. i replaced them with dieselRX plugs.

i can have injectors out, back in, and truck running in 3 hours start to finish

itd not a hard job at all. if its your first time, take it slow and remember how everything comes apart and goes back together

Colin S. Age:22 Certified Diesel Tech, Infantry US ARMY
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post #3 of 8 Old 03-02-2014, 08:22 AM
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there pretty easy just take your time,

might want to pressure test the cooling system while they are out and inspect the injectors cups.

as for the glow plugs if you have autolites they can be dis-formed, i had them in for 10k miles and all came out except cylinder one, i had to start the engine to pop it out.


i bought mine last year with 116k and diesel in the coolant an never worked on them before, (played a gamble but it was the truck i really wanted it) and had to pull the injector cups out and reseal the injectors, there are a few videos on youtube on how to do it if your worried but basically you pull the inter-cooler pipes/intake, unplug map sensor, and remove the valve covers(a 1/4 inch swivel and extensions will help big time here), then everything is accessible, just pull the drain plugs on the fuel rail(Allen key) and pull the injectors and plugs.

on reassemble leave the glow plugs out and engine harness unhook and set the valve covers back on with 1 bolt and turn the engine over to clear the cylinders of oil, so you don't hydro lock it .

as for time my first time , it took 2 days(let the in(3 with the wheel bearings) now i can have it torn down and back together in a afternoon.

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post #4 of 8 Old 03-02-2014, 08:46 AM
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post #5 of 8 Old 03-02-2014, 09:51 AM
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When I did mine for the first time it took around 10 hours for injectors and glow plugs. Most of the time was figuring out what tools to use and how to get the hard to reach bolts out of valve covers.
Id say it could be cut in half if I were to do it again.

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post #6 of 8 Old 03-02-2014, 02:26 PM Thread Starter
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So is the best way to remove the injectors, put the new injectors in and remove the glowplugs, crank the motor with valve cover on partially, then install the glowplugs?
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post #7 of 8 Old 03-02-2014, 03:13 PM
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Quote:
Originally Posted by rosshurlow1 View Post
So is the best way to remove the injectors, put the new injectors in and remove the glowplugs, crank the motor with valve cover on partially, then install the glowplugs?
thats how i do it. if you remove the end plugs you shouldnt have to crank it with the glow plugs out. but its a pain in the arse to get the rail plugs out and they need new o rings when you pull them. so i just pull injectors, put new injectors in, pull glows. crank engine a few times, youll hear when the cylinders clear out. and put glows back in and your done.


and make sure you put a valve cover back on each side...... ask me how i know how big of a mess it makes

Colin S. Age:22 Certified Diesel Tech, Infantry US ARMY
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post #8 of 8 Old 03-02-2014, 07:06 PM
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I made the mistake of hooking injectors up when cranking with gp's out, so I changed oil directly after, since they injected fuel. It's a good idea to leave the harness disconnected.

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