New 7.3L IDI turbo. Rattle and smoke.
#1
New 7.3L IDI turbo. Rattle and smoke.
I got my 84 E350 in 1995. It came with a 460/C6. Over the next decade I swapped the C6 for an E4OD and the D70 rear for a D70 dually. In 2005 I got an 89 E350 for it's IDI. A few years ago I added a remote turbo. At that time I also had a 2001 E350 PSD. They are both 7.3, the PSD turbo seems to work well, so I had a shop build me one like the PSD. The most boost I ever saw was ten pounds. But five pounds put me up one gear on hills and the black soot was almost gone.
Prior to adding the turbo I removed the fuel filter from the engine and put a Racor on the frame.
I had bought a turbo-calibrated IP in anticipation of adding a turbo, was carrying it, and swapped it in on the road prior to adding the turbo. I replaced the injectors about a year ago. And all was well.
Recently the 89 IDI has produced a large cloud of white smoke when starting cold.
I have just replaced the 89 IDI with a rebuilt 93 turbo IDI. All the fuel related stuff from the 89 is on the new engine.
I got a Kent-Moore J- 33300 Tach-N-Time. I already had a serious timing light. Everything about working on a van is awkward, including timing it.
I think it is at 4 degrees BTDC at 2K RPM.
I have driven it about ten miles and let it idle some. It idles and drives very smooth. Under acceleration there is a lot of grey/white smoke, and to borrow a term from top fuel, it reminds me of cackle. But it feels OK. If it was a gas engine I would say it sounds like too much spark advance.
I am willing to replace the IP and injectors. Any suggestions.
Here are a few pics.
https://goo.gl/photos/LJNV4esgmYmSzKdL8New
Prior to adding the turbo I removed the fuel filter from the engine and put a Racor on the frame.
I had bought a turbo-calibrated IP in anticipation of adding a turbo, was carrying it, and swapped it in on the road prior to adding the turbo. I replaced the injectors about a year ago. And all was well.
Recently the 89 IDI has produced a large cloud of white smoke when starting cold.
I have just replaced the 89 IDI with a rebuilt 93 turbo IDI. All the fuel related stuff from the 89 is on the new engine.
I got a Kent-Moore J- 33300 Tach-N-Time. I already had a serious timing light. Everything about working on a van is awkward, including timing it.
I think it is at 4 degrees BTDC at 2K RPM.
I have driven it about ten miles and let it idle some. It idles and drives very smooth. Under acceleration there is a lot of grey/white smoke, and to borrow a term from top fuel, it reminds me of cackle. But it feels OK. If it was a gas engine I would say it sounds like too much spark advance.
I am willing to replace the IP and injectors. Any suggestions.
Here are a few pics.
https://goo.gl/photos/LJNV4esgmYmSzKdL8New
#2
My vote is start at the injectors. Have them checked/ pop tested. Especially if there is a miss or two on a cold start. I believe you'll find one or more peeing.
The IPs usually break a shaft or won't make enough pressure to fire on a hot start. Rarely would there be other issues with them.
The IPs usually break a shaft or won't make enough pressure to fire on a hot start. Rarely would there be other issues with them.
#3
I had a discussion with an IP and injector re-builder. Like most others he said white smoke indicates the IP should be advanced. So I advanced it and the rattle got worse. So I retarded it and the rattle is either gone or almost so. I have said that if it was a gas engine I would think it had too much spark advance.
It idles and runs smooth, never a miss, and warm starts instantly. But the white/grey smoke is still antisocial.
I have not yet got on it hard up hill to check max performance.
All the fuel related stuff from the old engine went on the new. Could a fresh engine make obvious white smoke that was only marginal with the old engine?
It idles and runs smooth, never a miss, and warm starts instantly. But the white/grey smoke is still antisocial.
I have not yet got on it hard up hill to check max performance.
All the fuel related stuff from the old engine went on the new. Could a fresh engine make obvious white smoke that was only marginal with the old engine?
Last edited by raydav; 12-19-2017 at 10:37 AM.