LUVTruck.com

I just took off all the emissions and don't know what to do next. It can't idle and I think there's a burning smell or something. But did I take off too much or what? There's a large opening that one of the thick hoses attached to and it's pointing towards the radiator underneath the intake manifold. The other one is a tiny opening on top of the intake manifold, underneath the carb, closest to the engine. I've already plugged up the air manifold holes but I've no clue whatsoever to proceed. I'll be posting pictures tomorrow because it's night right now. Any help would be greatly appreciated particularly in regards to the burning smell. Thanks guys.

You need to plug the two holes you are talking about. That big one is a major vacuum leak.

_________________
OK, I'm over it. Where's the beer?

One explanation for the burning smell is emissions. I unhooked the belt from my smog pump (left everything else alone) and I already notice more emissions smell. Like Rondog says plug the vacuum leaks and it has a much better shot at running.

I took off my smog stuff piece by piece when I put on a Weber, and it ran fine until I took off the stainless tube that runs from the exhaust header over to the EGR valve under the intake manifold. It wouldn't idle, and ran rough. Put it back on, and it ran great. That's the only factory smog piece left, but it seems worth it. All smog vacuum ports are plugged, except one small one from the front side of the valve cover to the carb base, which I believe acts as a PCV valve, sort of.

Don't know or understand why you guys are always about removing the air pump and emission control devices on these trucks. I can make these luvs run like they did from the factory using all of the emission componets. Smooth consistant idle and great acceleration. Able to get 30 to 35 mph out of the factory Hitachi carb. I just don't understand. . All I see once that stuff is removed is vacuum leaks, bad/no idle, hesitation when accelerating, and blown headgaskets.(coming from egr not working when crusing down highway).
Mike.

I'm mostly in agreement. I've given up the smog pump on most the luvs I've had because they gave out, but I like my EGR working. Keeps temps in the combustion chamber down, cuts down on pinging, allows for more advance on the distributor allowing for a bit more power (if fuel quality allows), and happens to reduce NO2 emissions as a side bonus. The rest of it I can take it or leave it but the one truck I had with no EGR was always hard to get much out of without troubles.

The burning smell could be a few things. If you don't plug the holes for the smog pump manifold they leak out hot exhaust and could be cooking plug wires. If the hole for the large stainless EGR pipe in the exhaust manifold is open it will blow a fair bit of hot exhaust onto the firewall and scorch paint and wiring in its way. On my 77 the tube cracked and was leaking just a bit out between the pipe and the fitting and it burned the paint on the firewall on both sides.

_________________
95 Isuzu Trooper Daily Driver
86 Isuzu Trooper reliable backup
77 LUV 2wd stock beltway blaster (resting)
79 4x4 LUV project: 2.6L, 5spd, 31s (eventually)

MEPR: Man, my 4x4 makes all other LUVs look good

Well I plugged up the two holes and it works great. The idle is fantastic and it runs smoother than ever. Thanks for the help guys!