Was driving home tonight and close to home I put my foot down. Felt a little sluggish going into boost and then like it was misfiring. I let off and got the short distance to home. Turned the car off and opened the hood. Valve cover has a bunch of oil over it, as well as other places in the engine bay. This, I presumed, was not good. Cleaned up the oil and put more back into the car. I then started the car up again and the car is idling low and rough, with lean AFRs and low & wavering vacuum (i.e. around 10inHg). Am currently very worried and not so sure where to start looking. Any ideas what could have caused this? Am always worried when I have problems it's going to be something that is gonna need a rebuild.
Engine bay covered in oil, now low vacuum & lean at idle
soldave
41 - 53 of 53 Posts
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741 Posts
All I want is a little luck with this damn thing. Got the piston rings today, fitted them and put the pistons back in. Get the torque wrench to tighten up the conrod cap nuts to spec (38ft lbs according to the 4g63 factory manual). Just as the wrench cracks the bolt just breaks clean off! I think WTF and double check the torque settings on the wrench. All is good so I pull that piston back out as I've got to get another bolt for it. Try the same procedure with conrod in cylinder 2. First bolt torques perfectly. Second does exactly the same as that first bolt!
So I've given up for the evening for fear of destroying all the rest of the bolts. So much for getting a good start on the rebuild tonight
So I've given up for the evening for fear of destroying all the rest of the bolts. So much for getting a good start on the rebuild tonight
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1,724 Posts
Bolts are weak I'm guess they were on their way out already.
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1,724 Posts
I would just to be safe. We had a block like that would break them if Not right. Then replaced them with other's we had laying around and worked out great.
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1,724 Posts
We just Hammer'd are's out!
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741 Posts
Christ, if I get a hammer close to this car I think I'm just gonna let rip on it. It's such slow going, mainly as any parts I need have to be ordered from mainland and take about a week to come in (i.e. I can't do anything now for a week until I get 8 rod bolts delivered to the Mitsu dealership).
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741 Posts
It lives!!!
After a huge effort this weekend and some help by one of the most knowledgeable engine-builders in Okinawa, I finally turned the key on the Evo and got it running again. Putting it together wasn't without incident though, including having the motor locked up solid when we tried to turn the crank by hand! But we sorted it out in the end and I'm feeling pretty good about it to be honest. It's taken and age and has been difficult, but I've doe a good proportion of the work on it myself and it's more than I ever thought I'd be able to do.
Have written a full write-up of the final stages of my rebuild on my site. I would copy and put it on here but would need to change some of the wording so it fits in here which I really am too tired to do! So if you have any interest at all then have a look here: http://soldave.ismysite.co.uk/biginjapan/the-evo-lives
Thanks to all those who have helped me with advice in the rebuild. Has been much appreciated
After a huge effort this weekend and some help by one of the most knowledgeable engine-builders in Okinawa, I finally turned the key on the Evo and got it running again. Putting it together wasn't without incident though, including having the motor locked up solid when we tried to turn the crank by hand! But we sorted it out in the end and I'm feeling pretty good about it to be honest. It's taken and age and has been difficult, but I've doe a good proportion of the work on it myself and it's more than I ever thought I'd be able to do.
Have written a full write-up of the final stages of my rebuild on my site. I would copy and put it on here but would need to change some of the wording so it fits in here which I really am too tired to do! So if you have any interest at all then have a look here: http://soldave.ismysite.co.uk/biginjapan/the-evo-lives
Thanks to all those who have helped me with advice in the rebuild. Has been much appreciated
Joined
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741 Posts
I think you mean JDM mad tyte D1-spec... yo!
Actually he's USDM with about 20 years of race engine building experience and a good guy to boot.
41 - 53 of 53 Posts
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