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Well.. If you're not getting fire on the left side of the coils.. Have you checked all the wiring for the ignition circuit?

Something you could do to see if it is the injectors causing the problem.. Unplug them to see if anything changes, one at a time of course. If the engine stumbles really badly you know it's not that one, then try another one. Rinse and repeat.

Brand new as in brand new.. Not a mark on the cams.. Or buckets.. Nothing. This head/block has never seen fuel/spark. I'm asking this because I don't want to push this engine only to have it blast a rod through the block etc etc.. Or destroy something because of a premature BHG while it's...

Maybe you should just run down this list. http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=FI&P=16 And instead of visually checking for vacuum leaks and/or listening, perhaps try starter fluid or something else to triple check no vacuum leaks.

Wouldn't a TPS problem cause a CEL?

I've got a brand new long block available to me. I'm wondering if I should 1) just bolt everything together with the OEM HG torqued to 75 ft-lbs 2) Pull the head and install a MHG with ARP head studs torqued to 85 ft-lbs. (Since it's a brand new head/block will they need to be machined? I know...

Did you check the ISC to make sure it's functioning properly? http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=FI&P=106

Both are equally old?:naughty: Just kidding

Plugs wet? Are they firing under compression? Are they gapped properly?

Not sure if this would help answer your question or not.. But I did find a link regarding how knock sensors work in general. http://www.engineblox.com/?p=65

You could always run the resistance check on the coils to see if they're bad. Check the coil ground as well, should be attached to the head by the valve covers. http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=IG&P=10

Congrats, hope this one works out for you and doesn't knock like the rest(knocks on wood..)

Sorry to revive an old thread(But such a good one..) Very very nice build Kenny. I do have to say I'm quite envious of how your car has turned out. I'm hoping I'll be able to get mine looking half as good as yours.

Thanks for the welcome guys. I'll be starting a build thread soon on the 88. Starting with a fresh never turned engine so I'll make sure it's been torqued and installed correctly. Don't think I'll be going MHG or anything just yet. I'll probably just re-torque the head bolts in it for now(75...

Hello everyone on SM. My name is Coby and I'm from the central VA area. I've been hanging around for awhile but never really posted. I currently have 2 supras. One's a white 83(266,xxx) with a 1jz swap waiting to go in(For sale sadly..:cry:) and a 88 white supra(97,6xx) with a crate engine...