Hot start problem after Blown Turbo on a heavily modded TII!!
#1
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Hot start problem after Blown Turbo on a heavily modded TII!!
I have a pretty well modded TII. Microtech, T4, water injection, ect....
Well I blew the turbo about 3 weeks ago. It turned out the front bearing went out for no aparant reason to me. This of course caused oil to leak into my charge pipes. I replaced the turbo, and everytime I would get under boost there was a ton of oil smoke. I realized that my intercooler was filled w/ oil (front mount), so i took off a charge pipe from it and reved the engine. Out came a huge river of oil. I did this until there wasnt any more oil coming out. I put everything back together and now theres no smoke under boost.
Well now my car wont start very well at all when it's hot. I know this is a common problem, but it never happened before. I noticed that if I switched the fuel pump off before I turned the car off and let it die from fuel starvation that the car would fire up quite well. This made me think that a fuel injector was leaking. I tested them out, but they didnt leak.
The thing is that the car wont start at all if I just turn it off normally, I can crank and crank, and it sounds like its trying to start, but never does. Once I let the car cool down (10-20mins), it starts right up after about 3-4 cranks.
I know that the oil in my charge pipes is mostly gone, but there is still a lot of residue. That could have something to do with it. I know my timing is good, and its getting spark. My compression should be fine, it only has about 5k on the rebuild. It acts like it is flooded. What could possibly be wrong with this thing? Sorry for such a long post.
Well I blew the turbo about 3 weeks ago. It turned out the front bearing went out for no aparant reason to me. This of course caused oil to leak into my charge pipes. I replaced the turbo, and everytime I would get under boost there was a ton of oil smoke. I realized that my intercooler was filled w/ oil (front mount), so i took off a charge pipe from it and reved the engine. Out came a huge river of oil. I did this until there wasnt any more oil coming out. I put everything back together and now theres no smoke under boost.
Well now my car wont start very well at all when it's hot. I know this is a common problem, but it never happened before. I noticed that if I switched the fuel pump off before I turned the car off and let it die from fuel starvation that the car would fire up quite well. This made me think that a fuel injector was leaking. I tested them out, but they didnt leak.
The thing is that the car wont start at all if I just turn it off normally, I can crank and crank, and it sounds like its trying to start, but never does. Once I let the car cool down (10-20mins), it starts right up after about 3-4 cranks.
I know that the oil in my charge pipes is mostly gone, but there is still a lot of residue. That could have something to do with it. I know my timing is good, and its getting spark. My compression should be fine, it only has about 5k on the rebuild. It acts like it is flooded. What could possibly be wrong with this thing? Sorry for such a long post.
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Yea that is probably a really good suggestion. I suppose IM going to have to take out all the charge pipes and the IC and wash it out with degreaser or something.
#6
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The plugs are more than likely marginal. Since he already tested injector leakage, plugs would be step 2.
Step 3 would be spark, which he says he has. If the plugs fail to help and the entire intake system is oil free, then I would go back to step 1.
Returning to step 1, injectors, because of how he has to hot start now.
Step 3 would be spark, which he says he has. If the plugs fail to help and the entire intake system is oil free, then I would go back to step 1.
Returning to step 1, injectors, because of how he has to hot start now.
#7
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Well the plugs were very fouled. I wire brushed them off and it helped some. I put new ones in and there was no difference. I have spark at both leading and trailing. I will go ahead and thouroghly clean the intake system next. Hopefully that is all that it is, but that seems unlikely to me.
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