Engine Popping

[boostedbrian99]

Hey,
Quick question. When I go to WOT my engine pops threw about 4-5500 rpm. If im 90% throttle it wont do it only at WOT. I am running 11.8 AFR. I tried running 10.5 to 12.5 and it still does it. After about 5500 rpm it seems to clear itself out. I am getting a new downpipe and have the stock one on for now. I have no clue what it could be. Checked the plugs and the wires and everything is cool. Help.
Thank you

 

[boostedbrian99]

Has me stumped. I just bought new wires and plugs about a week ago and it did it before and after.

 

[boostedbrian99]

When I put the plugs in about last week compression was equal in all four. Forgot what it was but all equal and good

 

[justinhill98gst]

By engin poping do you mean back fire? Do you have some kinda of datalogger?

 

[boostedbrian99]

Yea like a missfire backfire type of deal. I dont have a datalogger. it will do it 2-3 times within like 2 seconds then clear itself. Only at WOT

 

[rhino4]

well in my eclipse i have to run premium fuel and i once made the mistake of putting in regular and that happened its ###### not the problem but its something to think about

 

[res7bequ]

Check to see if the connections to the power transistor are all the way in. Sometimes the little plastic thing keeping it all the way in gets broken.

 

[a_flint87]

Hmmm, I had a starion that was shooting 2 foot flames and popping like this, it ended up being timing, re-timed it and I was set!

 

[boostedbrian99]

Ill check the timming tommorow and see.

 

[a_flint87]

Any updates for us?

 

[boostedbrian99]

New update!!!! Threw a rod last night. Huge hole in the block right by the dipstick. Talk about a sweet ride at 65-70mph with oil everywere and front end locks up. On top of that these tow truck drivers in cleveland have a new law that if they think the car will be damaged while going on the tow truck they have the right not to tow it. so after 5 tow trucks at like 3 in the morning I finally got one to do it. All he did was make fun of me because hes a V8 guy and I almost punched him in the face calling it a ricer and he would smoke the crap out of it with his 200hp mustang fastback!!! woooow!!. geez Im getting maybe a bushur racing shortblock or something. Man I have no money. Help!!! Any donations will be accepted!

 

[GS-T_Newboost]

sry to here that but i get that alot here. still in school and all the kids with there trucks thinks my car is slow just cause its a 4 cylinder

 

[xxraptor660xx]

I guess you realised that you had a screwed up A/F ratio. Sorry that this happened to you, but think on the bright side! Now you get the chance to have a fresh motor in your car.

 

[boostedbrian99]

My a/f was good. It started to go lean on the gauge all of a sudden, and when I was getting off of it it stayed lean and detonated. Its all good. The car is for sale. My buddy can put a new bottom end 6 bolt in it for like 1800bucks. But I am dead broke.