Replacement Fuel Injectors
#1
#5
Yes, it does (I think). I have new plug boss seals, new Cam Cover gaskets, no oil in plug wells, all new plugs & coils (all OEM) and I have conducted all of the ignition circuit pin point tests and all have passed. However, I still have an ongoing but intermittent misfire code on number 2 (P0302 + P1314). It appears out of nowhere, I put Injector cleaner into my tank, the codes go away for a while and then come back! I am reluctant to keep putting cleaner in my tank because I am unsure of whether excessive use is advisable?
I am going to try swopping injectors on numbers 2 & 4, to see if the code moves....If it does, then I will either attempt to find somewhere here that will clean injectors properly without my need for a mortgage, or replace the offending injector?
I am going to try swopping injectors on numbers 2 & 4, to see if the code moves....If it does, then I will either attempt to find somewhere here that will clean injectors properly without my need for a mortgage, or replace the offending injector?
Last edited by EsRay; 09-06-2018 at 11:41 PM. Reason: clarifying
#6
Yes, it does (I think). I have new plug boss seals, new Cam Cover gaskets, no oil in plug wells, all new plugs & coils (all OEM) and I have conducted all of the ignition circuit pin point tests and all have passed. However, I still have an ongoing but intermittent misfire code on number 2 (P0302 + P1314). It appears out of nowhere, I put Injector cleaner into my tank, the codes go away for a while and then come back! I am reluctant to keep putting cleaner in my tank because I am unsure of whether excessive use is advisable?
I am going to try swopping injectors on numbers 2 & 4, to see if the code moves....If it does, then I will either attempt to find somewhere here that will clean injectors properly without my need for a mortgage, or replace the offending injector?
I am going to try swopping injectors on numbers 2 & 4, to see if the code moves....If it does, then I will either attempt to find somewhere here that will clean injectors properly without my need for a mortgage, or replace the offending injector?
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EsRay (09-07-2018)
#7
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#9
Thank you for your post, Wingrider; I am certainly at a loss to see what else it could be?
However, before I start messing about (in my inexpert way) with Injectors, I am going to try a dose of BG44 in my tank - I read a rave review for this product (somewhere) on this excellent forum - My apologies for losing track with the reviewers name, (whomsoever you are), given the many posts I read, but thank you anyway!
Is it not good to know that somewhere, there is a person over 60 years old, who still believes in magic?
However, before I start messing about (in my inexpert way) with Injectors, I am going to try a dose of BG44 in my tank - I read a rave review for this product (somewhere) on this excellent forum - My apologies for losing track with the reviewers name, (whomsoever you are), given the many posts I read, but thank you anyway!
Is it not good to know that somewhere, there is a person over 60 years old, who still believes in magic?
Last edited by EsRay; 09-08-2018 at 09:34 AM.
#10
Today I have P0302 & P1316. If the problem was with the Injector circuit, wouldn't I also get another DTC - Say, P0202?
If so, the fact that I do not have this DTC still leaves a clogged injector as the likely culprit, wouldn't you think?
If so, the fact that I do not have this DTC still leaves a clogged injector as the likely culprit, wouldn't you think?
Last edited by EsRay; 09-09-2018 at 04:31 AM.
#11
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EsRay (09-09-2018)
#12
Hello JagV8, thanks for posting.
I have new plug boss seals, new Cam Cover gaskets, no oil in plug wells, all new plugs & coils (all OEM) and I have conducted all of the ignition circuit pin point tests and all have passed. However, I still have an ongoing but intermittent misfire code on number 2. I have tried swopping coils and plugs but the DTC's stay at number 2.(P0302,P1314 and occasionally P1316)
I have new plug boss seals, new Cam Cover gaskets, no oil in plug wells, all new plugs & coils (all OEM) and I have conducted all of the ignition circuit pin point tests and all have passed. However, I still have an ongoing but intermittent misfire code on number 2. I have tried swopping coils and plugs but the DTC's stay at number 2.(P0302,P1314 and occasionally P1316)
#13
#14
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EsRay (09-10-2018)
#15
I had a compression test done back in February; 5 cylinders at 148 and three at 135. No loss of power, got no smoke and not burning any oil at all? Thanks for the suggestion, but I am going to try switching injectors around before I revisit compression.
#17
I think you would see a difference in the spark plug's condition if it was being affected by a head gasket leak and causing a misfire. I don't think a small head gasket leak would result in the misfire described. It would be more persistent and the loss of coolant or coolant in the oil would be fairly significant. If it is not the injector, I might think the actual wiring to the injector or coil may be damaged resulting in an occasional "short" that could manifest as a misfire. I think the plan on looking at the injectors as described is well thought out. I also believe you have ruled out the coils and spark plugs. I seem to recall (I think it was you anyway) that you have a bad electrical connector once before. Age and heat can be very hard on wiring and connectors.
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EsRay (09-13-2018)
#18
If it is not the injector, I might think the actual wiring to the injector or coil may be damaged resulting in an occasional "short" that could manifest as a misfire. I seem to recall (I think it was you anyway) that you have a bad electrical connector once before. Age and heat can be very hard on wiring and connectors.
Like you, I believe I have ruled out coils/plugs. I also think/hope I have dismissed coil wiring (all pinpoint tests passed). However, as you say, that could still leave coil wiring...…..
Accordingly, if the DTC moves with the injector, then it is the injector and if it stays with the swopped injector at number 2, then it must very likely be the injector wiring. Having said that, in this case, I would have expected an injector-circuit DTC to show up?
#19
Hi EsRay,
Just to add to your thoughts.
The fuel trim readings you posted points to an injector issue. They would not be explained by a head gasket, nor a wiring fault to the injector, but would match a dribbling injector rather well.
Putting the injector in an ultrasonic bath should clean it properly, but if you don't have access to one then a new injector should sort your problem.
You've already ruled out the other possibilities very effectively.
Regards
Tesla
Just to add to your thoughts.
The fuel trim readings you posted points to an injector issue. They would not be explained by a head gasket, nor a wiring fault to the injector, but would match a dribbling injector rather well.
Putting the injector in an ultrasonic bath should clean it properly, but if you don't have access to one then a new injector should sort your problem.
You've already ruled out the other possibilities very effectively.
Regards
Tesla
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EsRay (09-14-2018)
#20