Where should my timing be? :(

MyCARneedsHelp said:

Just wondering what my timing and fuel pressure should be at here. ANY help is great i need to be at work at 5 am . thanx guys . I dont know why but this thing is a slug. I almost got beat by a honda civic. UGGGHHH

.

Click to expand...

Start with your fuel pressure at stock 38-39psi with the vac line pulled and plugged. Many people crank it a touch too high.

I don't know how it can feel like a slug with 3.73s. You must have pretty high standards.

jason

Hissing sound? Almost sounds like a vacumn leak...

What codes did you retrieve? You'll need a test light, analog meter, reader, etc to get the codes since your CEL is probably non-functional.

A stockish SD motor will show a vacuum reading of about 18-20" at idle.

You can compare the ratio of driveshaft to wheel rotations to get a pretty good idea of gear ratio.

Good luck.

MyCARneedsHelp said:

im starting to think it doesnt have a 3:73 or somthing just isnt right. I set my timing at 11 and the fuel pressure at 39. It wil be fine and run nice and strong when i first start it up then it will bog and miss a little when i start cruising around for a little bit. I also hear a hissing coming from the top of the motor, could a injector be bad?

Click to expand...

I agree with JT, you should check the codes at this point.

I would suspect a bad sensor if trouble starts when the motor gets warm.

jason

HISSIN50 said:

There's no magic number for all engines. If you run well and dont get any detonation, you should be ok.

Click to expand...

I agree completely.

have u checked ur vacumm lines under your intake manifold?

i run 18* on a mix of 87, 89, and 92.. no dentonation.. backfires through intake once when started up and then clears up.. my god talk about a hard pulling sob.. top of a gear is just crazy

MyCARneedsHelp said:

i cant check for codes cause the last owner cut the plug out . All i got is wires.

Click to expand...

I am still amazed at how some people will treat their cars.

The best thing for you to do is replace the plugs. You can find them at any wrecking yard that has a fox body mustang.

OR, you can correlate by color to where it would have been located on the plug. This would be a major hassle though, and you would have to do it every time you want to check the codes.
In a perfect world, codes would be pulled before any part is replaced, and atleast every oil change.

Jrichker has a post on pulling codes without a code reader. Perform a search using jrichker and codes, and it should come up. You may have to do a little detective work to find out the color codes of the wires for each pin position on the plugs. Any good wiring diagram will do this for you.

Good Luck Dude
jason

I'm willing to bet you get some code.

I am guessing here, but if it runs ok before it hits certain temps, then I would say ACT or ECT. That is just a guess though, don't go buying parts just yet.