Starting Problems

[twistedcm2]

To start off I have a 1990 eagle talon tsi and I just rebuilt it. The car ran fine for a month or so and I wanted to put lowering springs on so I did. It took me around two weeks to complete the project because of college. I also replace the oil return line gasket to the pan. So I go to start the car and it just cranks and sort of chugs like it wants to start but something is holding it back. I just dont get why it wouldn start now when I did not touch anything related to the engine and starting it. So if you guys have any ideas to go about this please let me know. The only thing I can think is maybe the cas,mas,coil pack, fuel pressure regulator, or maybe the fuel pump. Is there any better way to approch this? Once again thanks for any advice.

 

[v8killer]

try to replace your coolant temp sensor ! i had 2 dsms that they went bad on..... always try that first becuase its the cheapest thing to start with about 20-30 bucks at advance or autozone ! then it could be your ecm or computer ! also see if it's getting spark and fuel . you might also want to check the timming marks to make sure it hasn't jumped !

 

[twistedcm2]

So I replaced the coolent sensor and it still did not do anything. I have checked the spark plugs and they have fuel on them. I also held one spark plug wire next to the coil pack and each one had spark going through them. I think the best thing would be to try and get a hold of a logger and see whats going on inside the ecu. Another guess would be the ecu its self my friend has one ill see if I can get a hold on it. The car also sometimes gets to the point of starting and stops and goes back to the cranking part and timing also looked good.

 

[hopwoodp]

I would check your ignition timing and make sure it is set where it is supposed to be. 5 degress btdc +/- 3 degress. This happened to me and it solved my starting problem. What happened before, my started seemed to turn really slow as if it had low battery power. I tried to see what the problem was and everything checked out, so I played with the CAS and I went to start it again and it fired right up. Give it a shot and see it that doesn't solve your problem.

 

[twistedcm2]

Yeah that would be easy to check the only thing that gets me is the car ran perfect and like I said I had it sit for about two weeks and didnt mess with anything besides changing the oil. I think if I can get a logger it woulod help out a lot or I'm guessing something electrical went out which is gonna be a pain to find.

 

[hopwoodp]

Yeah that would be easy to check the only thing that gets me is the car ran perfect and like I said I had it sit for about two weeks and didnt mess with anything besides changing the oil. I think if I can get a logger it woulod help out a lot or I'm guessing something electrical went out which is gonna be a pain to find.

Have you checked you battery? What I have noticed before, is if your car has been sitting(for I don't know how long), you battery will loose it's charge to an extent. I would try jumping the car and see if you can get it to start. Try that or see if you can get your battery charged up and then try.

 

[twistedcm2]

Yeah I have tried to start it by jumping it with another car still no luck.

 

[Old Mitsu Tech]

If your plugs are wet, change them to a nice new dry set of plugs. When I worked at Mitsubishi, we had customers start and shut off our cars and sometimes they just would not start due to plug fouling. This was on brand new dealership vehicles. Try that one first. Just out of curiosity.

If that doesn't work, let us know.

 

[twistedcm2]

Well when this first happened I did go out and buy new ones and gapped them right. It might not hurt to try it again but I did notice that when the car is turning over on the fourth turn over the car almost starts. So let me better explain if you are holding the key and trying to start it the engine is rotating and it does it three times and on the fourth it almost starts then goes back to the cranking. I really thing its something to do with spark. I did change out the spark plugs wires because I had put talor wires that were like 10.3mm or around there I got them off my other talon that is built. I wanted to sell this car without them so iI switched back to I guess you could say stock wires. It didnt start then so I put the Taylor ones back on still nothing. Just to note the car did run with the bigger wires and it ran very smooth so I dont think thats it.

 

[marsh63]

hey well if i was you id check your timing one more time. maybe even use a spark tester to see if you are even getting spark. since it is also a fresh rebuild check to make sure all the sensor wire conectors are all the way pluged in. i forgot to push some of the conectors together all the way and the car wouldnt work. good luck. tell us what solved you problem

 

[twistedcm2]

Thanks Marsh63 for some more tips I think today I'm going to test a lot of the electrical with a muti-meter since yesterday I didnt get ahold of one till about night time so I couldn't do much. Im also going to take a video and post it up here maybe that will help the understanding of the car and whats it's doing. Ill keep you guys posted.

 

[twistedcm2]

Here is a link to a video.

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[twistedcm2]

Ok So after getting ahold of a compresson tester I tested the car and all were fine execpt one cylinder was at zero. So Ill have to take it apart and see what it is but I just wanna thank everyone for helping me out with the great advice.

 

[marsh63]

not saying this is the same as the v8s im used to but sounds like your like 180 over on your timing but idk about the dsms. that sucks bout your comperssion. pull your valve cover off and see if any of the lifters are stuck down. you could have bent a valve or few. if not complete rebuild is nedded