I was running a set of 780cc injectors, and then I swapped to the 650cc injectors because they were in my other Colt and I knew they were good. When on E85, the car was running 1000cc injectors and controlling them (with success) with the same MAF-T and AFC. Obviously the problem has surfaced...

Yes, I checked the caps in the ECU and I tried another stock ECU with the same results. I should have put that into my explanation......-Les

The problem I am having is on my Mirage; I have been working on it to try to solve this problem, but my lack of available time lately has taken its toll and I would like to get this problem corrected so that I may use my time to drive instead of troubleshoot this car. The problem is a miss at...

Understood, Steve. It would probably be wise to do a nitrous engagement set-up that was controlled by a push button, but still through a window switch and WOT micro-switch. This would kind of take the idiot out of it (which I really need at times)! LOL!-Les

Thanks, Steve. How does the NTLS work? I am assuming that is cuts revs (obviously) and timing between gears in a no-lift situation. What about the nitrous that is on the WOT switch, then?-Les

Send it to me then; I'll pay shipping.........-Les

Looking at the E-prom ECU (the actual label on the chip) that came with Ghetto Colt, I can see that it is set up for 680cc injectors and a 2g MAF. The word "KNOCK" is also partially on the label so I assume it is to warn me through the CEL light that I am getting a certain amount of knock (...

I copied and pasted this from nweidlich's post about how he did his install.Just so you guys know, you don't have to buy a flange if you have the EVO 8 manifold. Just turn the turbo 180* on the mani, and drill and tap 2 holes; one in the manifold and one in the turbo flange. The twin scroll...

Just so you guys know, you don't have to buy a flange if you have the EVO 8 manifold. Just turn the turbo 180* on the mani, and drill and tap 2 holes; one in the manifold and one in the turbo flange. The twin scroll divider still lines up (of course) and it is much cheaper than using an...

To answer your question OP, no. The EVO 8 turbine is rotated in the opposite direction of your conventional 16g. You cannot interchange the turbine housings because of this; regardless of whether or not they will bolt up. If you also have the EVO 8 exhaust manifold, and depending how much...

I have looked and I don't have a KNOWN good one. Have you come up with one, yet? Have you had any luck otherwise, man?-Les

When installing bearings, you should use Plastiguage to see what the tolerance is between the bearing and the crank. I don't know off of the top of my head what size the rod journal is, but you should still use Plastiguage to check. The bearing is in bad shape for a reason. I am not confident...

Keep in mind that your coolant system should be a completely closed system, sans having too much pressure in the system and letting the radiator cap relieve the system. The amount of boost you are running should have no bearing on your radiator cap spring pressure. If by boosting you are...

Yes, the blue smoke is oil in the exhaust. This can be cause by a number of things, but *could* be the valve seals, valve guides, or turbo thrust bearing. Take your car up to about 40-45 MPH in second gear then let off to where the engine goes into a high-vacuum condition. Watch behind you...

Have you tried to bleed the lifters and then soak them in some seafoam or transmission fluid? I have had *some* luck with this, but it doesn't sound to me like you have a rod knock. A rod knock is present most of the time; there are times that you can "load" the crank (put the engine under a...

This may be a dumb question, but you are using a '91 and up CAS (the one without the pigtail), right? I may have another good one lying around I can send you to help troubleshoot your problem.-Les

OP, also verify that your compression tester is good. Try another one if you have one handy just to make sure your readings are correct.RL, all good points! The reason I was not looking specifically at the rings is that I haven't ever (necessarily) seen all four rings packs go bad...

RL, have you ever seen numbers as low as these double after getting warm? Obviously a warm bore will give better numbers than a cold one, but (WOW) double the compression? BTW, I am NOT doubting you, I am asking. I am still learning these engines, too (which is why I am still in the Newbie...

RLPerformance brought up a good point, that if he has really weak spark the injectors are just washing down the cylinders. This could contribute to a lower (I don't know if it could make it as low as 85-85-85-80 or not) compression in the cylinder.Think about something that is common to all...

That is a very good point! I never think about taking a "picture" of my vitals when everything is good; only when it screws up that I wonder what "normal" looks like.To the OP, I can't see your car cranking with decreased compression like that. Did you check your cam keys? Did you recheck...

Because you have fuel pressure and voltage output by the ECU, I would suspect a bum CAS. Do you have an extra CAS to try? You can plug it in without mounting it and turn it by hand with the key on. You should be able to see spark (test for spark normally) and hear the injectors pulse. It is...

Aren't the Spyders relatively heavy? Many drop rates are considered for DSM's that are not Spyders. Therefor, if you see a specific drop rate for a (for instance) 1999 Mitsubishi Eclipse, the drop rate may have been figured for a hard top (and much lighter) car. I understand that one mistake...

I'd check and recheck cam timing. Those compression numbers are even, but VERY low. I am sure your problem is related to compression/timing. Take a look at your cam keys. You may have to take your timing belt loose and take your cam gears off (or at least remove the retaining bolt) to see if...

dirtsdsm, when I start to troubleshoot a problem I always remind myself that the engine has to have air, fire, and fuel to start, AND they must all be timed correctly (I know, no newsflash). But keep this in mind as you check each part (air, fuel, spark, and timing).1. Check fuel pressure...

Just like bsbllfit7 said, a compression check will tell you if you have bent a valve. Of course, if you did bend a valve you would most likely have a "stumble" or "shake" to the engine at idle due to uneven compression unless you bent every valve the exact same (REALLY unlikely). Honestly, it...

Could be lifter tick.......as you rev the engine, the oil pressure should increase and possibly allow a stubborn lifter to pump up fully taking away the lash causing a tick. Using a long screwdriver or long, rigid object, can you isolate where exactly the noise is coming from? What weight of...

Yes, that is why I was asking if you had changed the pulley or not; just to see how many things had actually changed. Making sure the fingers and grooves of the pulley are clean is a must. Someone also mentioned that you may have a leak elsewhere getting on the belt; great point, but I forgot...

OP, was your belt squeeking prior to changing the alternator? Was the belt over-tightened initially (during the new alternator installation) by accident, then backed off? Did you have to re-use the alternator pulley (it isn't as dumb as it sounds; I have had to swap a few in my time because...

Do a compression and leak-down test, definately. It could be that when you let off the accelerator, the engine pulls a lot of vacuum. This vacuum can pull oil from the top of the head, past the valve seals, and down the guides along the valve stems. This puts oil into the chamber. Then, when...

Just like TRSblader wrote, do a complete once-over on the car to make sure all of your preventive maintenance is up to date. Then read and read some more. This site does have a ton of info on the 420a; it is a capable power plant. I certainly prefer the 4g63, but mostly it is because I have...

Did you freshen the stock head before you put it back on the new short block? Do you know the valves and seats were in good condition before reinstalling the cylinder head? Did the engine show signs of power loss over time or was the problem there all at once? Did you use an MLS gasket? If...

Absolutely could be hitting fuel cut, but until he updates his mods the world may never know........-Les

Did this happen all at once or did it get progressively worse over a period of time? How do your spark plugs look? Usually, when I get a cut-out on the top end (or when the boost comes on), the plugs are the first thing that I suspect. When large amounts of air (boost) and fuel occupy the...

Thanks, man!-LesGot the donor indoors today. I put a trans. service, oil change, spark plugs and wires on her; she seems to be doing great! Alternator isn't charging, so I decided to shut her off for the night. I'll replace the alt. in the morning. From what I could tell, it would...

If I may, the entity that sponsors this is Grassroots Motorsports Magazine. They have a website. I don't know if I am allowed to put up others' websites on here without moderator approval, but I am sure you can find it. It is $125 to enter your car (it doesn't count against your budget)...

Check out the link. Yes, I had to build a "skeleton" around the inside perimeter to stiffen the car before I ripped out the back. I had a hoop that was tacked into place in one of my Colt GT's. I took it out and cut it down and installed it into the Yugo. I'll have two runners going from the...

We get 5 runs in the autox and all the runs we want at the strip. The contest is held in Gainesville, FL in October. And yeah, I'd like to push it as hard as I can, but I would hate to oil-down the track and prevent others from getting their runs in just because I wanted to tick off another...

Pictures by fastasleep_photos - PhotobucketHere are some pics.-LesSo far, it hasn't been that bad. The worst part (and even IT wasn't that bad) was getting it off of the trailer with no wheels. The previous owner had a real set of Chromadora wheels that he wouldn't let go with it...

I am new to this site; I read a lot, but don't post a great deal. I would, however, like to share a project that I am working on because I think you guys may like it. I am putting a 7-bolt (don't turn me off, yet!) and an automatic (no, wait!) into the back of a Yugo. The project is in my...

I found the problem: the fuel line going from the top of the fuel pump in the tank to the hard line that goes through the fuel pump/sender assembly mounting flange was split. Sometimes I would get fuel pressure; other times I would not. I checked fuel pressure a couple of times and had it, but...

Thanks, guys. I will isolate those grounds tomorrow. I should probably terminate at the battery, huh?I wasn't smelling a strong fuel smell during cranking, so I didn't think it was rich. But, I will check that CTS in the morning as well. Doesn't the absence of CTS feedback to the ECU...

'91 Talon AWD/turbo/automatic. All stock except 255 lph in-tank and a shift box for the automatic.When it turns over, it takes a while to start. If the throttle is manipulated, it dies, unless it is fluttered and even then it may rev or may not rev.I changed the MAF to another one. If...