starts and stalls.

listdadt · 03-21-2007, 02:58 PM

just got an 86 mk1 n/a, picked it up for a song and a dance knowing that it needed some work. Just got a new timing belt, and is in for a clutch, but she won't run! The day I was supposed to bring her down to the garage, she wouldn't start, I figured the timing had jumped as the car had been beaten by the previous owner.

Timing belt has been changed, new fuel filter, plugs, cap, rotor, and the wires are pretty new, ohmed out various sensors to check specs, all seem ok. EGR valve is working properly, mechanic says the fuel pressure is ok. Tried the mass air sensor off of a running Yota using the same part number, still no go. She starts and then immediately stalls out. If you constantly feather the throttle you can keep her running, very rich, but running none the less.

Anyone else run into this?? Suggestions??

seven_mgte · 03-22-2007, 06:23 PM

The tps may be shot or misadjusted. as may the ISCV

listdadt · 04-23-2007, 08:46 AM

turns out the ECM crapped out. $2200.00 later, I have a new clutch, new timing belt and tensioner, new starter, new battery, 4 new H rated performance tires, a complete tune up, and a new ECM. Problem now is that it idles really low once it gets to operating temperature, causing to stall when I'm at a traffic light. I am also having a problem with flooding on the number 1 cylinder, I suspect a bad injector is to blame. Car goes pretty good on 3 cylinders, but it's going back to the shop tonight anyway. I got to drive it for the weekend anyway.

listdadt · 05-01-2007, 09:51 AM

...so it turns out that my valves are way out of adjustment. Discovered this in the process of some diagnostics to figure out why my car was still running like crap. I have also found that I have almost NO compression on cylinder 2. Looks like the head is coming off. The cylinder with almost no compression has the valves set better than most of the other cylinders that are still within spec so I have to believe that I either have burned out valves, or lost the piston rings on that cylinder.

03-21-2007, 02:58 PM	#1 (permalink)
listdadt Parts Guy! Join Date: Mar 2007 Location: merrimack, nh Posts: 44 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Rating: (0/0% )	starts and stalls. just got an 86 mk1 n/a, picked it up for a song and a dance knowing that it needed some work. Just got a new timing belt, and is in for a clutch, but she won't run! The day I was supposed to bring her down to the garage, she wouldn't start, I figured the timing had jumped as the car had been beaten by the previous owner. Timing belt has been changed, new fuel filter, plugs, cap, rotor, and the wires are pretty new, ohmed out various sensors to check specs, all seem ok. EGR valve is working properly, mechanic says the fuel pressure is ok. Tried the mass air sensor off of a running Yota using the same part number, still no go. She starts and then immediately stalls out. If you constantly feather the throttle you can keep her running, very rich, but running none the less. Anyone else run into this?? Suggestions??

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03-22-2007, 06:23 PM	#2 (permalink)
seven_mgte Cage Fighter Join Date: Aug 2005 Location: Coquitlam, BC.ca Posts: 327 Thanks: 0 Thanked 7 Times in 7 Posts My Google Map iTrader Rating: (0/0% )	The tps may be shot or misadjusted. as may the ISCV

04-23-2007, 08:46 AM	#3 (permalink)
listdadt Parts Guy! Join Date: Mar 2007 Location: merrimack, nh Posts: 44 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Rating: (0/0% )	turns out the ECM crapped out. $2200.00 later, I have a new clutch, new timing belt and tensioner, new starter, new battery, 4 new H rated performance tires, a complete tune up, and a new ECM. Problem now is that it idles really low once it gets to operating temperature, causing to stall when I'm at a traffic light. I am also having a problem with flooding on the number 1 cylinder, I suspect a bad injector is to blame. Car goes pretty good on 3 cylinders, but it's going back to the shop tonight anyway. I got to drive it for the weekend anyway.

05-01-2007, 09:51 AM	#4 (permalink)
listdadt Parts Guy! Join Date: Mar 2007 Location: merrimack, nh Posts: 44 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Rating: (0/0% )	...so it turns out that my valves are way out of adjustment. Discovered this in the process of some diagnostics to figure out why my car was still running like crap. I have also found that I have almost NO compression on cylinder 2. Looks like the head is coming off. The cylinder with almost no compression has the valves set better than most of the other cylinders that are still within spec so I have to believe that I either have burned out valves, or lost the piston rings on that cylinder.