leaky injector?

[Module Unknown]

I think I may have a leaky injector(s). On friday I put some FIC 650's in the car, and since then the car has been difficult to start. Have to crank it for a little while before it starts. Same exact feeling as when there is little to no fuel pressure which is why I'm assuming that I have a leaky injector.

I just figured i'd poke around here and see if anyone else had any other ideas on possible causes of have to crank the car for a bit before it starts up. But like I said, it was fine before the injector install. I don't see any leaks around the injectors, don't smell any fuel, and can't find any leaks anywhere else in the system. A background of what else I have: a walbro 190 (been installed for a while with no problems), all stock fuel lines fuel rail and fpr, replaced my fuel filter recently...

One more question, let's say I do have a leaky injector. Could that hurt the car in any way, and if so how? Should I get this fixed immediately or can I just deal with this for a little while?

 

[civic619]

There are a good number of people who have experienced this problem, especially with FIC 650cc injectors. Problems of hard starting which occur randomly, but at high number of frequencies. Very annoying!

I suffer this problem as well, and do think it is a leaky injector. One clue that leads me to the injectors is because a few times this problem had happen (hard start etc) the motor starts up but feels like 1 or 2 cylinders are not firing.

Then, after a good minute or two, the motor revs normal. This has happen a few times already, but most of the time its a hard start problem, the she starts and seems hesistant.

I am assuming that once the fuel is burnt off the injector, then everything is fine. My next inspection will consist of removing the plugs before starting it and inspect for any gas residue covering the electrode.

If it turns out that the electrodes have gas, then the injectors could be at fault. You and I are not the only ones so suffer from hard starts on FIC 650cc's my friend. We should get in contact with all those other people ( chime in here if you guys read this ) and let FIC know whats up!

Oh, and I had to replace a set of plugs last night becase I was mis firing underboost. This could have been cause by the leaky injectors fouling up the spark plugs.

 

[AL92]

I am wondering if I have this problem.My car starts fine when cold and most times starts fine when hot.It fires up right away but sometimes my idle goes down to 500 and it stalls out sometimes and sometimes just runs badly for a minute or so.And then the idle goes up to normal and then the car seems to run fine.My car pulls to redline no problem and only has this one thing.Its not hard to start either it just that idle goes strange .I think maybe have to reset the idle properly since have a new eprom and chip but it did this weird occasional near stalling slow idle before my new ecu and chip.Maybe its actually an isc problem or something but not sure what.I will take a good look at my injectors when install an new planned intake.Maybe one isn't seated exactly right or something.I seem to have no misfires though and no knock at all at current setting of 15psi.

 

[civic619]

check your biss screw and any other vaccum/boost related leaks. I really beleive your post should be else where since it doesnt relate to our issues.

 

[WhiteTsiAwd]

I am having the exact same problem, only with 450s and mine just wont start anymore, as of today. Did either of you figure out the problem? If so then please post so I have something to go on.

 

[PhoenixRPR]

Throw my name into the hat too unfortunately. I have a stock 1992 Eclipse GSX w/ similar symtoms. I think that's a good description above of how when you finally get her to start, she seems hesitant (3 cylinders). The problem seems to come and go. I've seen it in the morning, afternoon, and night.

Thing I have tried and did not work:

1. Resetting Computer by disconnectin negative battery cable for 30 mins.

2. Removing air filter & air flow meter for examination.

3. Checked ignition wires.

4. Checked spark plugs.

5. Checked ignition coil packs.

6. Checked all sensors on a Snap-On diagnostics tool.

7. Checked pigtail fuel injector harness/electrical connectors.

8. Checked for fuel leak near intake manifold (none).

9. Checked for all boost leaks by hand, sight, and Autometer boost gauge (none).

10. Checked electrical connections at battery. Autometer volt meter shows good power output by battery/alternator.

11. ISC motor is stepping properly, as seen on snap-on tool and my datalogger.


Thing I have not checed b/c I either don't know how, don't have the time, was told it isn't the problem, or is too costly:

1. Fuel Injectors

2. Fuel Pump

3. FPR

4. ECU

5. Exhaust leaks via cracked manifold etc...

6. Probably a number of thigns I can't think of right now.

 

[daren_p]

I have a simular problem. If car has been sitting for more then 5 hours or so it takes about 5 seconds for it to start, then its rough for about a second, then runs fine. If its only been sitting for a couple hours it starts like normal. This started happening when I installed my FIC 750 injectors & my walbro fuel pump (did at the same time) I first thought it was the oring on my fuel pump as I believe its slightly off from being perfectly straight (walbro has abit extra room compared to the stock pump for the oring to move around when you install it). I guess I should have installed one thing at a time so I'd know for sure what caused the problem. I was gonna check the pump so I guess I'll find out if it was my problem or maybe I need to look at the injectors as well.

 

[Goodguy162000]

Did anybody ever figure out what was going on with this? It sounds like the EXACT same problem I'm having? Any easy fixes or... What?

 

[PhoenixRPR]

I replaced the fuel injector connectors, fuel injectors+seals, and ECU w/ reman one from ecmsplus. My problem is gone for now.

 

[Nautica985]

There are a good number of people who have experienced this problem, especially with FIC 650cc injectors. Problems of hard starting which occur randomly, but at high number of frequencies. Very annoying!

I suffer this problem as well, and do think it is a leaky injector. One clue that leads me to the injectors is because a few times this problem had happen (hard start etc) the motor starts up but feels like 1 or 2 cylinders are not firing.

Then, after a good minute or two, the motor revs normal. This has happen a few times already, but most of the time its a hard start problem, the she starts and seems hesistant.

Im having the exact same problem with the FIC 650cc injectors I just installed

 

[dewdew]

I also noticed a hard start problem. When I start my car it idles rough for a second and when it sits for a while I get a puff of smoke. Also, whenever I take out the #4 spark plug, it is soaked in gas. Could this injector be leaking into the cylinder? I have Denso 660cc injectors, though.

 

[Goodguy162000]

Yeah, same problem here. I have the hard start ALWAYS. I also get the thing where I'll be cruising around town no problem and then all of a sudden my car idles stupidly and my AEM wideband Air/Fuel says I'm running at least 20% richer than I should be. The rpms drop and I can't push the gas or the car stalls out. It's driving me nuts.

 

[Goodguy162000]

Oh, I forgot to include that I have RC 550's...but you probably knew this if you checked my profile... if you cared.

 

[Module Unknown]

Did anybody ever figure out what was going on with this? It sounds like the EXACT same problem I'm having? Any easy fixes or... What?

Well, since I started the thread this problem has since cleared itself up. I have no explanation or any idea what the cause was. Helpful huh? . I wish I knew what it was that caused the initial problems that I was experiencing.

Since the time the problem arose, here's what I've been through. Installed a fullthrottlespeed afpr, still had the problem. Found afpr to be faulty (yes, seperate issue, imagine the luck). Turns out I didn't really need it anyways so I went back to the stock fpr and am still using it.

I bypassed the fuel pressure solenoid in an experiment to see if it helped the issue at the time. Seemed to help the car start a little easier and the problems starting after letting the car sit for a while didn't seem to be as bad. Although this could have all been in my head. I still haven't hooked that back up to this day though. It's not hurting anything.

In all my fiddling around the fuel rail and injectors came in and out a couple times so maybe reseating the injectors did something? I doubt it because the problem just seemed to gradually go away.

I really don't know what happened but my problem is gone now and the car is running well.