2nd Generation Specific 1986-1992 Discussion

i think i blew my engine

Old 09-24-2006, 02:43 PM
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Okay so after a week of the car sitting on jacks i finally finished gutting my car, and putting all of my adjustables and comp bushings in.



i eye my car so that it looks striaght, and then i head over to a friend of mines house to use his toe plates and camber tool.



right when i start the car i notice that EVERYTHING is abotu 300% louder. this is normal because i did just remove all of my sound deadening. when i make slow right hand turns i get this clunking sound (more like hte sound that a tire makes when you just blew off all of the tread and it is slapping), but this is a separte issue that i will resolve at a later time. right now back to the engine woes.



so i get everything well adjusted and make the 4 mile drive home. on the dive home the engine just stopped working. i wasnt pushing the car at all, i was just cruising around 40mph in 4th gear. i was goign up a hill when all of a sudden the engine just stopped working. no smoke came out of the back, no smoke under the hood, nothing. the temp was right where it was suppsed to be. the boost didnt spike or do anyhting crazy. i tried bump starting it, but it didnt work. it sputtered a bit but nothign after that.



my friend toed me home with his suby.



today i go to check all of the fuses, they were good. i check the ecu to see if it was fried, it was clean. i even swapped in a different ecu to see if that would help, but it didnt. i checked all of the wires that i use to start my car, and they are all clean, no openings, nothing. fuel pump is working, i can hear it whirring. i have oil, half way. i have an ample amount of coolant.



i pull out the plugs, and they kinda smell like gas. i hand tighten the trailing plugs and disconnect the spark plug wires. i then turn the engine over trying to see if the spark plugs would get wet, and when i pulled them out there was no fluid on them. i pulled out the line that goes into the fuel lines to see if there was fuel there, and fuel squirted out. so i am pretty sure i have fuel, even though it isnt showing up on the plugs. on top of that i highly doubt that every single one of my injectors got clogged.



so i am stumped, if you guys have any idea what to do next post a reply. if i can find a compression tester i am going to rent it and see if i somehow lost compression, but i dont know how that is frikken possible.
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Old 09-24-2006, 07:54 PM
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did you pull the line out after the fuel filter? might have a clogged filter.



how exactly did it die? did it sputter until it stopped and then refused to crank or did it just instantly go dead?



a blown motor you can normally get to run, just the idle sucks and it has no power.



kevin.
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Old 09-24-2006, 09:44 PM
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it just stopped dead. then i tried to start it, and nothing. bump start worked for abotu 3 seconds, but then died...



when i did bump start it it felt as if the afm had the flapper door closed, so it eventually died.
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Old 09-24-2006, 10:33 PM
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compression testers are pretty cheap. check it. when i blew my old n/a motor i was in 3rd doing 25mph. it just sputtered and died. started it back up and it had no power and sounded like a lawnmower.
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Old 09-24-2006, 11:35 PM
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Its fuel, you can almost always pull start a dead one.
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Old 09-25-2006, 01:25 AM
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it might not be a fuel problem at all, if it did start again ur clearly getting gas. good sign.

one thing i stronly recommend is to test the resistance of ur coil ignitors. i had the exact same problem on my FC, so im pretty sure about ur problem. plus, blown motors do have much more significant symptoms.



as for ur resistance reading, it should be between 0.2 to 1.0 ohm. if it isn't within that range, replace it and see if it starts up then. to check it, u gotta take off the plastic clip that says L1 and L2 n whatnot. it helps if u have a haynes repair manual.
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Old 09-25-2006, 07:48 PM
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it really didnt start, it more like it was alive because the tranny was engaged and moving.



and yea fc i am kinda thinking it may be fuel.





awhile ago when i first started to do the premix dance, I used straight motor oil. a month went by and then i stared to use real premix motorcycle high rev oil. once i got to my firned's house i had to jump on the rear of the car to settle the suspension, and i am thinking that the regualr motor oil might have resurfaced, and once the fuel started to go in a lump sum of oil with no gas went though my lines; thus clogging the fuel filter and the injectors.
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Old 09-25-2006, 11:13 PM
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motor oil in the tank? hmmmm??!!!
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Old 09-26-2006, 12:10 AM
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yea that is what i heard. i used 5w-30 in there. the thing with motor oil is that it separates from regular fuel. while tc3w, or whatever the thing for premix is, mixes with the fuel
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Old 09-26-2006, 03:31 AM
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Originally Posted by FC3Slider' post='838498' date='Sep 26 2006, 01:10 AM

yea that is what i heard. i used 5w-30 in there. the thing with motor oil is that it separates from regular fuel. while tc3w, or whatever the thing for premix is, mixes with the fuel


ok, but why would you ever put oil in the fuel tank?

thats probably why your engine wont do anything.
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