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Symptoms of a bad EGR and I have all of them: Last 2 weeks: 1- Rough idle 2- Missing, misfire 3- Detonation, pinging 4- Black exhaust smoke Before: 5- Car stalling after acceleration; i.e at a stop sign (had this intermittently for months; replaced the ISC, cleaned the throttle body...

No exhaust noise. There is some kind of vacuum leak for sure. It's pure exhaust smoke in the engine bay, not burning oil smoke. The smoke is coming from the intake manifold / EGR side of the car (driver's side). When I heard the pinging noise I thought it was rod knock but the car does...

All, I started my 87 Turbo for the first time in a week today and it started out normal, no color or smell from the exhaust, no pinging or sounds, vacuum normal, no codes thrown. The idle was a bit high (1100 RPMs) and stayed high for 4 minutes. It warms up and then idle is rough, idle is...

Thanks. I will look to Horsepower Freaks for some help.

This engine already has an HKS metal head gasket + ARP studs and a new head. If I can salvage this engine, which I think I can, I need to replace the stock internals with forged ones. I have no clue what to purchase here: pistons, cams? Any suggestions on what and where to buy these...

I have an 87 Turbo and need a new MK3 engine, as I have rod knock and the car struggles to keep idle and blows out black smoke. The car is worthless as it is right now. Does anyone have any suggestions for a couple of good places to get an MK3 turbo engine? I saw that some come with a...

Sorry, he is right. High octane gasoline burns slower than low octane gasoline. It was early and I was still sleeping. :) http://www.state.mn.us/mn/externalDocs/Commerce/Gasoline_Octane_Facts_102902052227_OctaneFacts.pdf http://en.wikipedia.org/wiki/Gasoline

Yes, the original MK3 Supra stickers had 18 City/23 Highway. I get 23 MPG average, but that is with a tuned engine, new O2 sensor, new spark plugs/wires, synthetic oil, etc. When I was messing with the air/fuel ratio and the fuel pressure, I was getting 27 MPG but it was backfiring and was...

Since you replaced the plugs and wires and are replacing the timing belt, I am assuming you are going to check the timing also? Check your cam position sensor too if you have a Turbo. Check your ignition coil packs (there are 3 of them) for voltage and resistance using a mulitmeter. Make...

Funny... :momaru: --------------------------------------- Thanks Gary for finally clearing this up as it has been a problem for many members, and I had questions about this too. :drink1:

Also check your ISC (Idle Speed Control Valve) - mine did this all the time after high RPMs and then slowing down. My ISC was pretty dirty - took it apart, cleaned it and the problem went away...

I would replace it if it is a big crack. How big is this crack? Go to a muffler place and tell them to check your exhaust system --- downpipe to pre-CAT to CAT to resonator to muffler.

Yea it could be your CAT too. Any smells?

Check for error codes - could be your AFM. Check all hoses and pipes, vaccum lines - maybe a hose came loose or a clamp. Check everything starting from the turbo to/from the intercooler. Do you have the Super Monitor? You can check error codes using that very easily. Is this a stock...

There are some general tests: http://www.water-cooling.com/articles/waterwetter/waterwetter.php http://www55.dixiesys.com/~bunker/wetter.html http://www.racerpartswholesale.com/redtech3.htm I don't know if anyone tested it for the MK3. Quote from the 2nd link: "WaterWetter®...

I was told by the Toyota mechanic to use Toyota Red plus Water Wetter. Probably just said it for job security. It does seem that $18.00 a bottle is outrageous. A car salesman I know said, "Yea and you can't even drink it - I've had bottles of wine cheaper than that...." But I do...

I have an 87 5-speed Turbo and it is just like the Lexus AFM screw. Turn it clockwise/counter-clockwise with a flathead screwdriver and your RPMs increase/decrease. I messed with it and even looked at my S-AFC digital RPM display and it went from 845 RPMs to 650 RPMs at idle. It is not the...

Shawdude is very knowledgable. He was absent from the list for a while. I would take his word over almost anyone's. I had a question as to why the 86.5 to 88 has the screw you can turn to increase or decrease the idle speed and the 89+ does not. I have an 87. I was idling around 780...

My 1987 manual says 650 RPMs for Turbo and 750 for N/A. I was wondering why there is a difference and also what effects there would be if you have a Turbo at 750 RPMs at idle?

Is this a stock engine? Any mods like the Lexus AFM? Do you have an adjustable fuel pressure regulator or S-AFC so you can adjust and tune the A/F ratio? You can also check this by using the diagnostics port and hooking a multimeter to VF and E1. The voltage from 0 to 5 volts also is an...