converting tbi to tpi - Page 2 - NJFBOA - Home of New Jersey's Camaros and Firebirds

maroman88 · 02-09-2005, 11:13 PM

i got a camera, i jus need pictures of a TPI already in a car so i can see what goes where

Untamed · 02-10-2005, 10:28 AM

Check the fuse for the fuel pump. On TA's its in the center top of the fuse box. Dunno about Camaro's, though each slot should be labeled.

And it may seem silly, however make sure your battery is connected. A friend of mine was one second shy of calling a flat bed when he realized the ground wasn't connected. Another friend had a bad terminal on the hot - some corrosion formed under the shield and ate away enough copper to prevent it from channeling. Both are pretty easy fixes unless your battery cables are as tight as they can be already.

maroman88 · 02-14-2005, 12:56 AM

ok i got the engine to turn over finnally. the harness where it goes through the firewall on the drivers side was the problem. the conector for the main thick red wire was not connecting wit the other side when plugged in. only problem now is that it wont start, i think its the battery from sitting for so long, so ill jump it tomarrow hopefully

maroman88 · 02-14-2005, 10:54 AM

no luck battery is fine, it just keeps cranking and makes some hissing and popping noises but wont start

The Fixer · 02-14-2005, 11:50 AM

1st question, do you hear the fuel pump prime when you turn the key? Did you swap in a high-pressure pump?

If both of those are OK, then look to the firing order. Maybe the distributor was dropped in 180* out, or the wires are crossed.

maroman88 · 02-14-2005, 11:58 AM

yea the pump primes no i didnt get a new fuel pump and i checked the plug wires 105 times lol, im guna go double check the fuel lines now to make sure that gas is gettin through....

The Fixer · 02-14-2005, 12:23 PM

Quote:

Originally Posted by maroman88

yea the pump primes no i didnt get a new fuel pump

I'd bet that's your issue. The stock TBI pump is rated much lower; they run about 12 psi at the fuel rail. TPIs need around 35-40 psi at the rail, or it will not run. Time to hit up the parts store for a TPI pump, then drop the tank and install it in your stock sending unit.

maroman88 · 02-15-2005, 11:46 AM

there was some presure, i got shot with gas when takin the lines apart but that was as far as i got, we had a working house fire so that shot the rest of the day to ****. i dunno how i would put the distibuter in backwards, it went in the only way i could get i back in, i made the marks of where it was when i took it out and put it back in the same place but could the timing be so far off it wont start? i just really aernt lookin forward to spendin 100 bucks and doin a fuel pump swap............

The Fixer · 02-15-2005, 11:56 AM

Quote:

Originally Posted by maroman88

i just really aernt lookin forward to spendin 100 bucks and doin a fuel pump swap............

I don't blame you, but even if you put an adjustable fuel pressure regulator on it, you'd never get enough pressure to have those injectors flow properly. You gotta do it!

maroman88 · 02-15-2005, 10:03 PM

grrr, but it wont run at allll, not even for a second, without gettin the fuel pump

The Fixer · 02-16-2005, 08:17 AM

Quote:

Originally Posted by maroman88

grrr, but it wont run at allll, not even for a second, without gettin the fuel pump

I doubt it. The stock TBI pump flows maybe 1/3 of what it takes to pressurize the injectors; not enough fuel mixed with air and spark to get it running.

maroman88 · 02-16-2005, 09:11 AM

ooooooo fine, ill start looking at prices for fuel pumps...