Qestions about sy

[sy2478]

just got it couple weeks ago. It doesn't have many mods..adjustable fuel regulator , boost controller and atr intercooler and pump.

First what color are the stock injectors? Mine are red.

The boost gauge is totally off. so i have no idea what its doing. When I boost launch the truck it pulls great for couple seconds but then after 40mph it doesn't feel like it is pulling very hard. this weekend I replaced the cap, rotor, wires and plugs...the wires are the atr wires i think..they have " turbo" on them...they were corroded badly...;the truck feels faster but not what i was hoping.

when i changed the cap I used an accel and it doesn't feel like it is sitting flat on the distrubter. when it was sitting flat i could only get one scew in and the other would be offset. finally got both in but I can shake the cap back and forth like its not sitting flush. How are every one elses?

I checked the vaccum on the upper intake. which I probally should check lower but any way it checked at 20" there. I have already replaced the fuel filter.

Other than a shake from a broken motor mount it runs smooth, no miss or stumble. Is it possible the spring on the waste gate is weak and leaking boost????

Any other ideas on things I should be checking? thanks for the input.

 

[blk00z28]

Re: Qestions about sy

The broken motor mount might be fooling the motor into thinking you have a ton of knock.

 

[dgoodhue]

Re: Qestions about sy

The cap should sit flat on the distributor, if it doesn't seem right its because it probably isn't. The first couple of times I found harder than I expected, its something I got used to.

 

[2fast4u]

Re: Qestions about sy

just got it couple weeks ago. It doesn't have many mods..adjustable fuel regulator , boost controller and atr intercooler and pump.

First what color are the stock injectors? Mine are red.

The boost gauge is totally off. so i have no idea what its doing. When I boost launch the truck it pulls great for couple seconds but then after 40mph it doesn't feel like it is pulling very hard. this weekend I replaced the cap, rotor, wires and plugs...the wires are the atr wires i think..they have " turbo" on them...they were corroded badly...;the truck feels faster but not what i was hoping.

when i changed the cap I used an accel and it doesn't feel like it is sitting flat on the distrubter. when it was sitting flat i could only get one scew in and the other would be offset. finally got both in but I can shake the cap back and forth like its not sitting flush. How are every one elses?

I checked the vaccum on the upper intake. which I probally should check lower but any way it checked at 20" there. I have already replaced the fuel filter.

Other than a shake from a broken motor mount it runs smooth, no miss or stumble. Is it possible the spring on the waste gate is weak and leaking boost????

Any other ideas on things I should be checking? thanks for the input.

Good question. I have always wanted to know if my injectors are aftermarket or stock. They are also red. The distributor cap should be flush with the dist. or else a possible misfire may happen, or havoc will come into effect because of the rotor hitting the towers etc, or you may get crossfiring under the cap because of the misalignment. Also, Sounds like you may have a plugged up catalytic converter. My truck pulls real hard past 40, so you definetely have something going on. Once in a blue moon my truck will run like a raped ape(like today), but, unfortunately have a miss/rough idle thats probably taking a bit of the performance away(not today..weird). Your vac is good. First thing, I would change out the motor mount, and see how it does after that. If your motor mounts are bad, it will take alot of the torque away. Then, if that doesn't do the trick.. It may be time for a new cat. Can be alot of other issues too. Fuel pressure and so on. Gotta run datamaster and thoroughly check things out. So, there ya are. Have a Great weekend, and Happy Holidays!! Karl

 

[Flyin Ryan]

Re: Qestions about sy

how's your plugs? what kind and what gap?

Stock injectors are RED in color and I agree the broken motor mount may be showing tons of false knock on the knock sensor which makes the computer retard the timing to help prevent damage to your motor.

Try to link up with a local syty owner with datamaster or tunerpro and have them data log your truck and you'll see all that is going on with it or fix that motor mount and see if your mid and top end liven up a bit.

 

[sy2478]

Re: Qestions about sy

thanks for the info...I never would have thought of the motor mount setting off knock..thank you for that info for sure...The cat will be coming off this week. The plugs are the AC cr42ts...they are gapped at .035"....I went with the autu lite wires...thinking at the time i would not be racing it that much...but guess what...thats all I can think about...

I will be taking care of all those issues this week and ordering a a pillar pod with boost gauge...are there any cheaper than $ 50 painted anywhere??? Are there any members in the palm beach florida area??? Thanks for the help

 

[ghettosled]

Re: Qestions about sy

get an aftermarket boost gauge and make sure its not overboosting, which will lead to spark retard and the truck falling on its face. thats probably the most common. otherwise, excessive gap on the plugs will lead to a studder effect under boost. a clogged cat will not make boost and rev poorly. a weak fuel pump will cause a lean condition and you can watch fuel pressure drop, or 02 millivolts become inconsistant at WOT.

there is a slot on the ignition module (mounted on the distributor) and the cap must locate itself flush in the groove... usually if both the screws tighten up, you got it right.