6G Celicas Forums

So i imported a gt4 to illinois! It was running fine on saturday until it died out when i gave it gas
I go to it today monday it wont start sounds like the timing belt is off checked the timing it was a brand new belt. Nice and tight how ever the car had no compression! I disconnected the intercooler and put it back on now its got compression and cranks healthy! There is spark and plenty of fuel pressure but i saw the ground cable smoking so i replaced it it dosent smoke now. Any ideas? im anxious to drive this thing thanks!

Btw i cant understand how a car goes from having no compression to having compression it doesn't make any sense!

No, it doesn't make sense which means you probably did something wrong doing the compression test the first time. Sounded like no compression or read near zero on a compression tester?

Welcome to the boards! A real GT-Four in Chicago, eh? We have a couple of meets a year at Starved Rock. You'll have to come to a few of them. We may be having a small get together soon in the city as well.

If you have spark and fuel, you should have ignition. Did you happen to check the timing when you checked the belt? It's possible that the belt skipped a tooth. Is your check engine light on when you turn the key on? You said it was running fine until you gave it gas, so it was running and then died? Smoking grounds are never good. Was it a stock ground? Corroded or pretty clean? Going based off of the ground, I'd start checking fuses to make sure everything is good.

Post pictures of your new car. I call dibs on a ride in this beast!

Welcome.

Subscribed.

Pictures under the hood would be helpful. What were the results of your compression test, and what did you use to check it? You need to ensure that ALL ground straps are connected. Lack of a ground strap could easily burn an over stressed ground strap. Either way, it sounds like your problem is electrical.

I used a compression tester i also took the spark plugs out and crancked it didnt hear or feal air till the secound time!

Thanks! Starved rock ay! I got pics posted in my profile! Ill post more pics soon! Already checked fuses


Thank you



Ill get some pics of it

if you are getting spark, fuel, and compression, then it should be running.

Ok so now i figured stuff out cylinder 1 has no compression and cylinder 2 3&4 read 150psi i see the piston moving up and down but no compression im guessing bad rings or bent valves on cylinder one! Anyone got diagrams for timing im taken the engine apart! Btw my compression gauge was messed up bought a new one lol

pour a cap full of oil into cylinder one. If you get a bump in compression then it's the rings. If not it's the valves. Unlikely for it to be valves, because the 3sgte engines are not interference engines, but hey...anything can happen.

Here's the link for just about anything you'll even need to know about overhauling your engine.
http://gt4.mwp.id.au/

This post has been edited by bsamps4: Oct 29, 2013 - 4:48 PM

Burned a valve maybe? Do a leak down test, you'll want an air compressor someday anyway.

Valves stuck open on cylinder one was the cause! Pistons are still good!

Bent valves stick open, sucks. Time for valves and guides!