If our 90T is stone cold it won't start on the first try. Always the second. when it's hot.. no problem. Does the 7mgte have a "cold start injector"?
2x's to start it cold
- Thread starter Supra5MGTE
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JustAnotherVictim
Supramania Contributor
Yes but the way the fuel circuit is set up you don't get a priming pulse from the fuel pump until the ECU see's the engine rotating so it may take a couple of turns for it all to happen!
it's acting like the cold start injector isn't working. I had to clean the one on my 3.0 4runner and it starts like a champ no matter what.
Disconnect the cold start injector wire clip and see if it makes any difference. If it doesn't, then it's probably at fault. If it takes even longer to start, than we know it's at least working somewhat.
My car starts immediately with it working, and takes about 7 cranks when cold to catch with it disconnected.
http://www.cygnusx1.net/supra/library/TSRM/fi/FI_077.html
My car starts immediately with it working, and takes about 7 cranks when cold to catch with it disconnected.
http://www.cygnusx1.net/supra/library/TSRM/fi/FI_077.html
The CSI can get pretty gunked up so you may want to pull it for a cleaning. The problem could also be the Thermo Time Switch in the top of the thermostat housing. You should get power to the CSI clip when the coolant is cold and the engine is cranking. Be quick about checking it though, the TTS is fed from the starter circuit and automatically shuts off after about 5-10 seconds even if cranking is continued.
So the CSI is something that can just be pulled out and inspected without having to replace any seals/ring? And how does one clean his cold-start injector?
Two bolts and it comes out. There is a gasket under it. You'll need to disconnect it at the fuel rail too. Two crush gaskets there. If you're not sure it's working better to test things electrically first. If you just want to clean it you'll have to pull it out and soak the tip in a cleaner. That'll clean the outside and *may* clean the tip but the best thing to do after that is hook a aerosal can of solvent (Berryman's Chemtool works well) to it and connect it to your battery. That way you can flush it and check for a good spray pattern. No sparks, flame, or smoking while doing this or it'll be an occasion to break out the marshmellows.
Just another reason to always run a Top Tier gasoline like Chevron or put a dose of polyether amine based injector cleaner in your tank twice a year. Use polyether amine as it's the only stuff that actually works. Other FI cleaners are little more than weak solvent based snake oils. Polyether amine is found in Techcron Concentrate, (Chevron invented the stuff), Redline SI, BG44k, and Gumout Regane (in the clear bottle).
The manufacture of polyether amines isn't cheap so expect to to pay more than for cheapie FI cleaners but the stuff works. Regane is the best deal at around 6 bucks at Target and some auto stores. It's 30-40% PEA. Try Ebay for BG44k and pay around $11, much less than the $28 or so it usually costs. Then again I've heard BG Products changed it's formula to no longer include PEA so who knows. Regane is the best deal if you don't want to pay for Techron Concentrate. Pass on the Chevron ProGuard, it's a watered down version of Techcron.
Just another reason to always run a Top Tier gasoline like Chevron or put a dose of polyether amine based injector cleaner in your tank twice a year. Use polyether amine as it's the only stuff that actually works. Other FI cleaners are little more than weak solvent based snake oils. Polyether amine is found in Techcron Concentrate, (Chevron invented the stuff), Redline SI, BG44k, and Gumout Regane (in the clear bottle).
The manufacture of polyether amines isn't cheap so expect to to pay more than for cheapie FI cleaners but the stuff works. Regane is the best deal at around 6 bucks at Target and some auto stores. It's 30-40% PEA. Try Ebay for BG44k and pay around $11, much less than the $28 or so it usually costs. Then again I've heard BG Products changed it's formula to no longer include PEA so who knows. Regane is the best deal if you don't want to pay for Techron Concentrate. Pass on the Chevron ProGuard, it's a watered down version of Techcron.
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