No start

Just to be clear on the issue. The engine will not start and it backfires through the intake?

It appears you do not have a carb engine, it is actually a throttle body with an injector in it.

So we need to find out if we are getting proper spark and fuel. I suspect we have an issue where the injector is leaking. If the engine is backfiring then it is safe to assume that it has spark at this point. However, if there is too much fuel then it will not run.

Here are some guides that will help with this:

https://youtu.be/dCjmRL3p4Cs

https://www.2carpros.com/articles/engine-backfires-while-running

When you replaced the spark plugs, what did they look like? I attached a chart below that will show what fouled plugs look like. Were they black and burned looking?

Let's start with this info and we can go from there. Thanks

Can't remember how the plugs looked and I no longer have the old plugs. I remember just pulling them and putting new OEM plugs in due to the valve cover leaking all around them. it's a tbi I spray some starting fluid in it no luck. just keeps turning over. had a be backfire out the exhaust sound like a gun shot but still no start smoke coming from the throttle body. remember one the old mechanical telling to pull a plug and check the color of spark. Can't remember if blue was out of time or yellow.

Okay. If it doesn't fire off starter fluid then we need to confirm the spark. I know you don't remember when you pulled the plugs so we are going to have to do that again.

Let us know if you have a strong spark and we can go from there. Thanks

Yea, it's getting spark. been talking with a old mechanical here at the shop just bouncing ideas off each other do believe it's the crack position sensor. on this car it's on the back side of the motor where the coil pack are mounted to the ignition control module. which is new had to replace it do to a code i had but I never change the crank position sensor. just swap it over from the old ignition control module when out there and took a ratchet and was tapping the ignition control module where the crank position sensor is. got it to fire up and run but wanted to shut off. tapping it when it was running it would idle good then miss and shut off, etc, not sure. I have a new crank position sensor on the way. I will update when I put in see what happen and I will pull the plugs and get some pic and see how they look, etc.

Great find. Thanks for the update. That is great info. Please let us know how it makes out but it sounds like you found it. Any info that you can post to it would be great. Thanks

Well, I got it fired up but still having a problem when ever you put it in drive it starts missing and popping. it'll idle fine with a few miss now and again. took the top off the air filter watching the fuel spray seems good spray around the intake as it run with starting fluid to see if there any leaks but nothing just don't understand it, darn problem no check engine light. like when in drive i fully push the pedal down and it was trying to shut off ig. I need to check fuel pressure.

That is great progress. We can definitely help with this however, we need to get a new post started for it.

This one is titled No Start and others will not find an issue with putting it in drive under this post. We are here to help you but you solving your issues are helping others in the future but they need to find them.

https://www.2carpros.com/questions/new

If you can get a new one started that would be great but if the issue is only in drive, I am thinking we have a possible torque converter issue.

Thanks again for updating us with this info. Thanks

I made a new post .

Sounds great. Thanks. Someone will jump on that if they have not already. Thanks for using 2CarPros.