Grr, i think ima shoot my car..

[DarkKnight]

Hey guy's i got my timing light today, and set it back to 10 step by step the way i read to do it.

Put me 5gallons in here, cranked her back up. And that popin shit came back., along with loss of power/no power .


Can any one think of something else that might be doing this?


Only other thing i can think of that will fix it is a .308 :-/

[85MercPark]

I am assuming you had the connector unplugged. Double check your firing order. Any chance your timing chain slipped a tooth?
Carb or exhaust backfire?

[85MercPark]

Backfire in an automobile engine typically results from various malfunctions related to the air to fuel ratio. Usually, backfiring occurs in carbureted engines that are running lean where the air fuel mixture has insufficient fuel. ("Running lean" is typically a sign of mal-adjusted carburetors or fuel injection where there is not enough fuel for the amount of air). Backfire also occurs in engines that have an exhaust leak. When a driver shifts up and lets off the gas, the engine has a moment of running rich or with insufficient oxygen. This causes an incomplete burn which causes the fumes to explode in the exhaust system. The leak itself is the most dangerous aspect. Without it, the mixture would cool enough not to explode. A fuel injected engine may backfire if an intake leak is present (causing the engine to run rich), or a fuel injection component such as an air-flow sensor is defective.

Fuel pressure, fuel filter and pump – leaks and corrosion could cause lack on fuel injection.

[DarkKnight]

I unpluged the port connector, i have checked the firing order prob 10 x's, whats the cfi sound like if it's backfiring?

[mrltd]

Is the timing chain original? The harmonic balancer could have spun also.

[DarkKnight]

Im guessing the chain prob is original, but im not 100% sure anymore.

I talked with the feller agine today that i bought it from, he said he put a higher cam in it but wasent sure what it was.... What an idiot. Along with that iw as on the phone with my grandmother, And i told her what was going on, the first words she said, well i cant quote them, but she said cam, along with my lady frineds father, ( My grandma use to rebuild engines for the army back in the 60's )

I set it back agine by ear, What i do is i move it till it sounds a bit better, then i tighten it up. I drive a bit to see if it is still Flooding. If it is i put it back in reverse, and move it just a bit more, untill the flooding is gone .

I have no idea of what this could be. like i said the only thing's not new on it for fuel is o2 sensor and of corse the CFI Unit....

Maybey she will last me for a little whille though.

What do you guys think though.

If it's not the cam, which im 50/50 at this point on that idea, and it's not the fuel. what elese is there?
Along with with my timing advanced, and it running on what sounds like good rpm's Could it hurt the engine?

And better yet, Does it sound like it needs a engine rebuild?

Well im rambling for long enough. Thanks guys,

Dark ;->

[JumboFriendly]

I talked with the feller agine today that i bought it from, he said he put a higher cam in it but wasent sure what it was...

That's not a good thing. I'd be real worried about whatever else he may have screwed up while inside. There's probably no telling what you'd find if you tore it down.

[trwp72]

Some things that can make it backfire....

A worn down lobe on the cam, exhaust side on one cylinder... Makes it "pop" thru the Carb or in this case, the CFI

Broken or loose rocker arm

Timing off because the chain jumped a tooth or two...

Timing not set right....

Exhaust leak, like mentioned

Distrubutor problems

Distributor cap cracked

Plug wires old, "leaking" fire to another plug wire

Electronic ignition module or pick up getting ready to bite the big one...

These are some of the causes I have seen over the years.... maybe it will help you to track down the problem...

[DarkKnight]

Funny, me and Fresh been talkin, And i cant find my Electronic ignition module....

[gadget73]

Its on the side of the distributor. Its the thing with the big grey plug.










...........unless its really not an 85 model but an 83 or older, in which case it doesn't have one...........

[85crownHPP]

nah, if he found the spout connectos hes gotta have a TFI module.

darkness - the TFI module is what all the wires are going into on the distributor

[85MercPark]

A worn down lobe on the cam, exhaust side on one cylinder... Makes it "pop" thru the Carb or in this case, the CFITiming not set right....

With the cam upgrade I would suspect this. When I threw an RV cam in my 77 LTD one of the lifters was bad and it would backfire through the carb. Can't recall if it was intake or exhaust.

[DarkKnight]

Well i got a new umm,Igntion controle module, AKA Selonoide switch today, still popin.

Guys, do you think it be wise for me to sell this car and find another box?

Thank's
Dark

[88MercWagon]

*cough* carbswap *cough*

[DarkKnight]

), Id love to but i dont think it would fix my prob mang :-/, i think it needs engine work done on it... And i dont know what all else./ And im a bit fed up with trowing money at it. :-<


But i love the idea :->

Dual holly 4 barl carb 650 :-D Drop a 460 or a 351 or heck an HO and it be bad ass. But sum big $$