injector question
05-01-2007, 07:58 PM
#1
Senior Member
Thread Starter
Join Date: Dec 2005
Posts: 125
injector question
is there an easier way to get the injector plugs off of the injectors without breaking the sides of the plugs off? mine are dry rotted, and as soon as I take a screwdriver to the sides, they snap. I got one plug off and the onlything that was holding the little staple clip on on was the plastic back part of the plug. I'm deffinately going to check the fuel pressure before I ohm out anymore.
pointers any one? btw I was doing this with all of the injectors in place, and did not diassemble anything. I'm sure they would come off easier if I were to take the intake manifold off and pull the entire fule rail.
Also, while I had the one injector unplugged I decided to start the engine to see what it ran like with no pluse. This sensation was much more pronounced than the trouble/virbration/slight lack of power that I am experiencing normally. Is it possible for when the injector is going bad to only partialy pulse, and thats why I'm not noticing the harshness that I did with the injector unplugged. makes sence to me if the coil in the injector is slightly damaged that the injector would still pulse, but not with the brevity or stoutness that it normally would. But that is just my electrical engineering speaking. let me know what you think.
btw the one injector I tried was at 13.1 Ohms. sorry for the novel. I know that more detail helps over the forum though.
oh yeah today the cheapest fuel pressure gage that would work was like $43 dollars It is meant for a shcrader valve, but also had a t fitting for cars with none like ours. I dont need the whole big *** kit just a gage and t fitting. I need to try harbor freight or something. any suggestions?
pointers any one? btw I was doing this with all of the injectors in place, and did not diassemble anything. I'm sure they would come off easier if I were to take the intake manifold off and pull the entire fule rail.
Also, while I had the one injector unplugged I decided to start the engine to see what it ran like with no pluse. This sensation was much more pronounced than the trouble/virbration/slight lack of power that I am experiencing normally. Is it possible for when the injector is going bad to only partialy pulse, and thats why I'm not noticing the harshness that I did with the injector unplugged. makes sence to me if the coil in the injector is slightly damaged that the injector would still pulse, but not with the brevity or stoutness that it normally would. But that is just my electrical engineering speaking. let me know what you think.
btw the one injector I tried was at 13.1 Ohms. sorry for the novel. I know that more detail helps over the forum though.
oh yeah today the cheapest fuel pressure gage that would work was like $43 dollars It is meant for a shcrader valve, but also had a t fitting for cars with none like ours. I dont need the whole big *** kit just a gage and t fitting. I need to try harbor freight or something. any suggestions?
05-01-2007, 08:56 PM
#3
It really isn't too difficult to take the metal clip off w/o damaging although I know what you're saying. just pick a side and pull the clip's leg away and work with it. I usually use a razor blade.
Injector could be partially clogged or possibly the compression is low in the cylinder, one cylinder on my 92 has very low compression and I experience the same symptoms as you. When the injector is unplugged, the complete misfire is worse than when it's connected. If my any chance it's #4 and you pulled the harness off without pulling the plenum, i'd run a compression check first, if it passes, dig in and replace the injector. If it's already apart, replace the injector and put it back together, if it still doesn't run smooth, check compression.
Injector could be partially clogged or possibly the compression is low in the cylinder, one cylinder on my 92 has very low compression and I experience the same symptoms as you. When the injector is unplugged, the complete misfire is worse than when it's connected. If my any chance it's #4 and you pulled the harness off without pulling the plenum, i'd run a compression check first, if it passes, dig in and replace the injector. If it's already apart, replace the injector and put it back together, if it still doesn't run smooth, check compression.
05-01-2007, 10:46 PM
#4
Originally Posted by Hectic
It really isn't too difficult to take the metal clip off w/o damaging although I know what you're saying. just pick a side and pull the clip's leg away and work with it. I usually use a razor blade.
Injector could be partially clogged or possibly the compression is low in the cylinder, one cylinder on my 92 has very low compression and I experience the same symptoms as you. When the injector is unplugged, the complete misfire is worse than when it's connected. If my any chance it's #4 and you pulled the harness off without pulling the plenum, i'd run a compression check first, if it passes, dig in and replace the injector. If it's already apart, replace the injector and put it back together, if it still doesn't run smooth, check compression.
Injector could be partially clogged or possibly the compression is low in the cylinder, one cylinder on my 92 has very low compression and I experience the same symptoms as you. When the injector is unplugged, the complete misfire is worse than when it's connected. If my any chance it's #4 and you pulled the harness off without pulling the plenum, i'd run a compression check first, if it passes, dig in and replace the injector. If it's already apart, replace the injector and put it back together, if it still doesn't run smooth, check compression.
05-03-2007, 12:06 PM
#5
Senior Member
Thread Starter
Join Date: Dec 2005
Posts: 125
Originally Posted by Hectic
It really isn't too difficult to take the metal clip off w/o damaging although I know what you're saying. just pick a side and pull the clip's leg away and work with it. I usually use a razor blade.
Injector could be partially clogged or possibly the compression is low in the cylinder, one cylinder on my 92 has very low compression and I experience the same symptoms as you. When the injector is unplugged, the complete misfire is worse than when it's connected. If my any chance it's #4 and you pulled the harness off without pulling the plenum, i'd run a compression check first, if it passes, dig in and replace the injector. If it's already apart, replace the injector and put it back together, if it still doesn't run smooth, check compression.
Injector could be partially clogged or possibly the compression is low in the cylinder, one cylinder on my 92 has very low compression and I experience the same symptoms as you. When the injector is unplugged, the complete misfire is worse than when it's connected. If my any chance it's #4 and you pulled the harness off without pulling the plenum, i'd run a compression check first, if it passes, dig in and replace the injector. If it's already apart, replace the injector and put it back together, if it still doesn't run smooth, check compression.
vg has 201,000mi and oil has always been religiously changed
anyone on the fuel pressure gage?
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