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[quote=”Chevyman21″ post=125784]To keep that quote thing from getting longer I’m gonna start a new reply here. Anyways, if the regulator has an issue it is possible that it is causing or at least contributing to the problem. I would start by testing the prime fuel pressure and then proceed to test the fuel pressure when running. This will help rule out a fuel issue if it is in spec. It will also verify proper regulator operation. Throwing parts at the car without testing is an expensive endeavor which we don’t want you to go through if you don’t have to.[/quote]
gotcha, gonna be looking at the fuel pressure video on the ETCG channel then
[quote=”Chevyman21″ post=125782][quote=”jimv” post=125780][quote=”Chevyman21″ post=125779][quote=”jimv” post=125778][quote=”Chevyman21″ post=125776][quote=”jimv” post=125775][quote=”Chevyman21″ post=125773][quote=”jimv” post=125771][quote=”Chevyman21″ post=125768][quote=”jimv” post=125767][quote=”Chevyman21″ post=125766]Have you checked for vacuum leaks?[/quote]
No I have not[/quote] I would start with a visual inspection under the hood. Make sure all connections electrical and vacuum wise look ok. It may be the TPS or IAC. Did this problem start before or after the new sensors?[/quote]Well I have been under the hood and I don’t hear any hissing noises and everything seemed connected properly. This problem started before the new sensors
[quote=”MDK22″ post=125769]Have you checked the battery?
Did you gap the plugs before installing them?[/quote]My battery is relatively new and connections are good. I have not gapped my spark plugs though[/quote] Check the gaps of the plugs. However if the problem started before the plug change as well then gapping the plugs may not solve it. Have you checked for history codes?[/quote]
Yeah it was happening before i changed the plugs as well, and the only codes that I’ve ever got on it was a bad catalytic converter and some misfiring, i swapped around some coil packs and that went away.[/quote] Ok, so clear something up for me here, did you fix the original problems? Did you ever determine the cause of the misfire? There seems to be more to this. Just swapping coils around without replacing the defective coil would cause the misfire to move to the respective cylinder typically.[/quote]
Sorry! I should have told you i did fix them, i replaced the catalytic converter and bought 2 new spark plug boots for the 2 cylinders that were misfiring when i swapped them around. I haven’t gotten a misfire since[/quote] No worries, just tryin to get the lay of the land here with the situation. It will allow us to help you better. What year is the Sentra? My feel is that it’s a fuel or electrical issue.[/quote]
2005 1.8l base and about 181k miles on it[/quote] Ah gotcha. Have you tested fuel pressure? Also, have you checked the fuel pressure regulator? The regulators are a common part to go bad.[/quote]
Have not checked fuel pressure. I had the same notion that it could be the fuel pressure regulator but do you think it would cause it to start like that?
[quote=”Chevyman21″ post=125779][quote=”jimv” post=125778][quote=”Chevyman21″ post=125776][quote=”jimv” post=125775][quote=”Chevyman21″ post=125773][quote=”jimv” post=125771][quote=”Chevyman21″ post=125768][quote=”jimv” post=125767][quote=”Chevyman21″ post=125766]Have you checked for vacuum leaks?[/quote]
No I have not[/quote] I would start with a visual inspection under the hood. Make sure all connections electrical and vacuum wise look ok. It may be the TPS or IAC. Did this problem start before or after the new sensors?[/quote]Well I have been under the hood and I don’t hear any hissing noises and everything seemed connected properly. This problem started before the new sensors
[quote=”MDK22″ post=125769]Have you checked the battery?
Did you gap the plugs before installing them?[/quote]My battery is relatively new and connections are good. I have not gapped my spark plugs though[/quote] Check the gaps of the plugs. However if the problem started before the plug change as well then gapping the plugs may not solve it. Have you checked for history codes?[/quote]
Yeah it was happening before i changed the plugs as well, and the only codes that I’ve ever got on it was a bad catalytic converter and some misfiring, i swapped around some coil packs and that went away.[/quote] Ok, so clear something up for me here, did you fix the original problems? Did you ever determine the cause of the misfire? There seems to be more to this. Just swapping coils around without replacing the defective coil would cause the misfire to move to the respective cylinder typically.[/quote]
Sorry! I should have told you i did fix them, i replaced the catalytic converter and bought 2 new spark plug boots for the 2 cylinders that were misfiring when i swapped them around. I haven’t gotten a misfire since[/quote] No worries, just tryin to get the lay of the land here with the situation. It will allow us to help you better. What year is the Sentra? My feel is that it’s a fuel or electrical issue.[/quote]
2005 1.8l base and about 181k miles on it
[quote=”Chevyman21″ post=125776][quote=”jimv” post=125775][quote=”Chevyman21″ post=125773][quote=”jimv” post=125771][quote=”Chevyman21″ post=125768][quote=”jimv” post=125767][quote=”Chevyman21″ post=125766]Have you checked for vacuum leaks?[/quote]
No I have not[/quote] I would start with a visual inspection under the hood. Make sure all connections electrical and vacuum wise look ok. It may be the TPS or IAC. Did this problem start before or after the new sensors?[/quote]Well I have been under the hood and I don’t hear any hissing noises and everything seemed connected properly. This problem started before the new sensors
[quote=”MDK22″ post=125769]Have you checked the battery?
Did you gap the plugs before installing them?[/quote]My battery is relatively new and connections are good. I have not gapped my spark plugs though[/quote] Check the gaps of the plugs. However if the problem started before the plug change as well then gapping the plugs may not solve it. Have you checked for history codes?[/quote]
Yeah it was happening before i changed the plugs as well, and the only codes that I’ve ever got on it was a bad catalytic converter and some misfiring, i swapped around some coil packs and that went away.[/quote] Ok, so clear something up for me here, did you fix the original problems? Did you ever determine the cause of the misfire? There seems to be more to this. Just swapping coils around without replacing the defective coil would cause the misfire to move to the respective cylinder typically.[/quote]
Sorry! I should have told you i did fix them, i replaced the catalytic converter and bought 2 new spark plug boots for the 2 cylinders that were misfiring when i swapped them around. I haven’t gotten a misfire since
[quote=”Chevyman21″ post=125773][quote=”jimv” post=125771][quote=”Chevyman21″ post=125768][quote=”jimv” post=125767][quote=”Chevyman21″ post=125766]Have you checked for vacuum leaks?[/quote]
No I have not[/quote] I would start with a visual inspection under the hood. Make sure all connections electrical and vacuum wise look ok. It may be the TPS or IAC. Did this problem start before or after the new sensors?[/quote]Well I have been under the hood and I don’t hear any hissing noises and everything seemed connected properly. This problem started before the new sensors
[quote=”MDK22″ post=125769]Have you checked the battery?
Did you gap the plugs before installing them?[/quote]My battery is relatively new and connections are good. I have not gapped my spark plugs though[/quote] Check the gaps of the plugs. However if the problem started before the plug change as well then gapping the plugs may not solve it. Have you checked for history codes?[/quote]
Yeah it was happening before i changed the plugs as well, and the only codes that I’ve ever got on it was a bad catalytic converter and some misfiring, i swapped around some coil packs and that went away.
[quote=”Chevyman21″ post=125768][quote=”jimv” post=125767][quote=”Chevyman21″ post=125766]Have you checked for vacuum leaks?[/quote]
No I have not[/quote] I would start with a visual inspection under the hood. Make sure all connections electrical and vacuum wise look ok. It may be the TPS or IAC. Did this problem start before or after the new sensors?[/quote]Well I have been under the hood and I don’t hear any hissing noises and everything seemed connected properly. This problem started before the new sensors
[quote=”MDK22″ post=125769]Have you checked the battery?
Did you gap the plugs before installing them?[/quote]My battery is relatively new and connections are good. I have not gapped my spark plugs though
[quote=”sinfull” post=120593]Just a thought if it were the fuel pressure as suggested wouldnt it fault after sitting for long periods also not just random 10min or 1hr.
Still worth while checking your pressure just to know its ok.
Does it run ok when it starts or does it cough and fart for a bit and eventuallt clear itself?
One more thing. When it doesnt want to start hold your foot flat on accelerator and wind it over and see if it wants to start. Ive had vehicle in the past (older p11 nissan primeras) that flood themselves after short trips. Different vehicle i know but may help narrow down your issue.[/quote]
It does run ok when it starts. I used to have a few misfires when it would start but I changed two of my coil packs and it hasn’t happened since. I do give it some gas sometimes when it is taking long to start and it usually will get it going but I have never completely held my foot flat on the accelerator. *update* I also did clean it with seafoam this weekend just to clean it and I still have the issue.
[quote=”sinfull” post=120593]Just a thought if it were the fuel pressure as suggested wouldnt it fault after sitting for long periods also not just random 10min or 1hr.
Still worth while checking your pressure just to know its ok.
Does it run ok when it starts or does it cough and fart for a bit and eventuallt clear itself?
One more thing. When it doesnt want to start hold your foot flat on accelerator and wind it over and see if it wants to start. Ive had vehicle in the past (older p11 nissan primeras) that flood themselves after short trips. Different vehicle i know but may help narrow down your issue.[/quote]
It does run ok when it starts. I used to have a few misfires when it would start but I changed two of my coil packs and it hasn’t happened since. I do give it some gas sometimes when it is taking long to start and it usually will get it going but I have never completely held my foot flat on the accelerator. *update* I also did clean it with seafoam this weekend just to clean it and I still have the issue.
[quote=”Tri9SS” post=120486]When you changed fuel pump, did you just do pump or the whole assembly. There have been problems with the fuel pressure regulators on them. I beleave the pressure regulator is part of the assembly. Do what College Man said, if starts then regulator. If you can test fuel pressure you can see if the pressure bleeds off soon after shutting it off. good luck.[/quote]
I’m pretty sure I changed the whole assembly, because like you said the fuel pressure regulator is apart of the assembly (so is the fuel filter and what not.) But, I have tried priming the fuel pump before and still no luck on starting first try.
[quote=”Tri9SS” post=120486]When you changed fuel pump, did you just do pump or the whole assembly. There have been problems with the fuel pressure regulators on them. I beleave the pressure regulator is part of the assembly. Do what College Man said, if starts then regulator. If you can test fuel pressure you can see if the pressure bleeds off soon after shutting it off. good luck.[/quote]
I’m pretty sure I changed the whole assembly, because like you said the fuel pressure regulator is apart of the assembly (so is the fuel filter and what not.) But, I have tried priming the fuel pump before and still no luck on starting first try.