ihatejoefitz Posted January 20, 2008 Share Posted January 20, 2008 Okay, thanks for all you help so far. I've got spark that appears to be correct. I haven't gotten a chance to to put a timing light on it but that will be next weekend I guess. Again, my car is a 72 with an 83 L28ET, MSnS_E v.021s (I will be upgrading soon, just want proof on concept here) .MSQ... http://www.reynoldsanddanielle.com/pictures/CarStuff/MSnS/MOBY/msns_extra021u_settings.zip Anyway, I haven't gotten the car to start yet. The car doesn't even begin to start, it just cranks with out any ignition whatsoever. I don't think I'm getting fuel from the injectors. After cranking, I'll pull a spark plug and it will be bone dry. I've plugged in one of those injector harness tester lights and it flashes, so this gives me hope. I pulled a fuel line off of the fuel rail and there is a good amount of fuel flow. I've tried two different stock pressure regulators. I'm at a loss, what could the problem be? Quote Link to comment Share on other sites More sharing options...
dexter72 Posted January 21, 2008 Share Posted January 21, 2008 You said you have spark that appears to be correct. Lets check everything and make sure you have fuel and spark. Is the fuel pump running when you first turn the key on?. Does the pump also run while your cranking the engine?. Did you check fuel flow from the filter to the rail while the engine is cranking over?. Does the coil wire have spark to the cap?. What about spark at the plug wires?. Quote Link to comment Share on other sites More sharing options...
ihatejoefitz Posted January 21, 2008 Author Share Posted January 21, 2008 You know, this is a good question. I've wired the pump directly to a switched 12v source, maybe the pump isn't getting power during cranking. However, there should still be enough pressure in the line to at least give the engine a little stumble. I'll check that out next time. I know its got spark because I've pulled a plug and seen it spark during cranking. Thanks for the help. You said you have spark that appears to be correct. Lets check everything and make sure you have fuel and spark.Is the fuel pump running when you first turn the key on?. Does the pump also run while your cranking the engine?. Did you check fuel flow from the filter to the rail while the engine is cranking over?. Does the coil wire have spark to the cap?. What about spark at the plug wires?. Quote Link to comment Share on other sites More sharing options...
dexter72 Posted January 22, 2008 Share Posted January 22, 2008 The pump is supposed to run when you first turn the key on as a priming for the fuel system. You still need good fuel pressure for the engine to start. Also remember that when your first trying to start the engine you may have to crank it a while. Quote Link to comment Share on other sites More sharing options...
jimbo5670 Posted January 24, 2008 Share Posted January 24, 2008 i have having this exact same problem as of late, signal in MS, fuel pump running, megatune says i have a pulsewith etc, just no gas if i pull the plug, just a priming pulse, dont mean to jack the thread, but intrested in the result thanks guys, matt Quote Link to comment Share on other sites More sharing options...
ihatejoefitz Posted January 25, 2008 Author Share Posted January 25, 2008 Between work and school, I haven't had a chance to get back out in the garage. Maybe Saturday... Is there a way to monitor pulsewidth in Megatune? Can it be considered accurate? i have having this exact same problem as of late, signal in MS, fuel pump running, megatune says i have a pulsewith etc, just no gas if i pull the plug, just a priming pulse, dont mean to jack the thread, but intrested in the result thanks guys, matt Quote Link to comment Share on other sites More sharing options...
dexter72 Posted January 26, 2008 Share Posted January 26, 2008 Make sure you have the power wire or relay for the fuel pump wired to a power source that has power when cranking and whith the key on. If you have it connected to a switched voltage source that doesn't also have power when cranking or on, you won't have any fuel pump function in the run position. Write back with what you find. Quote Link to comment Share on other sites More sharing options...
ihatejoefitz Posted January 26, 2008 Author Share Posted January 26, 2008 I started today by pulling the fuel rail with injectors still connected from the intake manifold. I turned the car over to see if I got any spray at all. There was none. I wondered if it was possible that all six injectors could be clogged completely. I grabbed a spare injector and threw it on, turned over the car and saw that it was spraying as normal. My question is, does anybody know of a do-it-yourself way to clean these injectors. I've already painted and polished the little mounts, the other injectors I have use different mounts so, I'd like be able to clean and use the nicer looking ones. Thanks. Quote Link to comment Share on other sites More sharing options...
Careless Posted January 27, 2008 Share Posted January 27, 2008 I started today by pulling the fuel rail with injectors still connected from the intake manifold. I turned the car over to see if I got any spray at all. There was none. I wondered if it was possible that all six injectors could be clogged completely. I grabbed a spare injector and threw it on, turned over the car and saw that it was spraying as normal. My question is, does anybody know of a do-it-yourself way to clean these injectors. I've already painted and polished the little mounts, the other injectors I have use different mounts so, I'd like be able to clean and use the nicer looking ones. Thanks. I've cleaned my injectors, however the engine is not one that I care to fix, I just like hearing it roar, so I'm not sure what this will do in the long run to your injectors. What I did was I put a wire wheel on a drill press. locked the position, and wire wheeled any deposits off the metal part of the injectors (just for handling sake... dirty stuff sucks). Don't do this on the connector or the end of the injector, as they are plastic based materials. I then used a car battery to quickly power the injector and click it on and off. At this point I could tell which injector was bunk... But after a couple of clicks, it worked better. I then filled a stainless steel container with varsol, and left the injectors and o-rings in the varsol. I filled it part way up so that the tips of the injectors were positioned downward. 2 days later, I opened up the container, and battery tested the injectors and they all clicked louder than before, signifying that they were freed up to an extent. Looking in the varsol, I saw clumps of dirt and crud floating around. Thus, the conclusion that it did draw something out of the injectors. Put them all on, and started it up..... still a wonky idle...toiling over what's wrong... I realized that this time around, I left the 6th spark plug wire disconnected... Once reconnected, it ran great, all the way to 7000. Quote Link to comment Share on other sites More sharing options...
ihatejoefitz Posted January 27, 2008 Author Share Posted January 27, 2008 I've cleaned my injectors, however the engine is not one that I care to fix, I just like hearing it roar, so I'm not sure what this will do in the long run to your injectors. What I did was I put a wire wheel on a drill press. locked the position, and wire wheeled any deposits off the metal part of the injectors (just for handling sake... dirty stuff sucks). Don't do this on the connector or the end of the injector, as they are plastic based materials. I then used a car battery to quickly power the injector and click it on and off. At this point I could tell which injector was bunk... But after a couple of clicks, it worked better. I then filled a stainless steel container with varsol, and left the injectors and o-rings in the varsol. I filled it part way up so that the tips of the injectors were positioned downward. 2 days later, I opened up the container, and battery tested the injectors and they all clicked louder than before, signifying that they were freed up to an extent. Looking in the varsol, I saw clumps of dirt and crud floating around. Thus, the conclusion that it did draw something out of the injectors. Put them all on, and started it up..... still a wonky idle...toiling over what's wrong... I realized that this time around, I left the 6th spark plug wire disconnected... Once reconnected, it ran great, all the way to 7000. Thanks, exactly the kind of info I was looking for. I also found this, sounds to me like your injectors are not all firing. sometimes if a motor sits for a while the injectors get clogged or stuck or something. you can test to see if they are opening, by giving them power from like a 9 volt battery. if you hear a clicking sound they are good, if not they are clogged or stuck. two ways to fix a bad injector that i have found, first, a good tap with a hammer-be very careful, second, soak the injector in simple green over night. hopefully this help you. also i would not say opti b/c you have spark at all the plugs Now that school has started, I've got plenty of time between days when I can actually work on the car. I will probably be trying both methods. Quote Link to comment Share on other sites More sharing options...
jimbo5670 Posted January 28, 2008 Share Posted January 28, 2008 clogged injectors huh? I hope mine is something that simple, although im running a fuel filter, so im not sure the plausability of it, but when i get back to jersey, ill give that a shot EDIT: I didnt see that about the time issue, that would make some sense then, thanks again guys EDIT AGAIN: It died when it was running, i first assumed it ran outa gas (those worthless stock 240 guages) then i scratched that because it wouldnt run after i threw 5 gal in the tank. Is is possible I clogged the filter and/or the injectors if/when the pump sucked up all the gunk in the bottom of the tank? Quote Link to comment Share on other sites More sharing options...
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