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What\'s wrong with the motor now???

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General_Failure Use your head, don't abuse it!

1,036 posts · joined Jun 2004 ·

#410629
I just finished the rebuild of my 1800 van's topend, again.

It has a different head, and all the right pistons now.

It now has a non-negative deck clearance (big oops!) and no cracked heads.

The starter is now enthusiastic again too.

Here's the problems:

*It's hard to start.
*It doesn't like to stay running.
*It sounds like it's running on 2 cylinders on high revs and acceleration.
*It dies on acceleration before it goes 'vrooom' like a wounded lawnmower.
*There's a godawful banging sort of noise coming from the 3,4 side of the engine (which was there before the rebuild but occurred after the previous engine failure. Possibly after I messed with the carb. Don't remember).
*The brake booster is defunct but the vacuum line is intact (could be seized).

The positives:
* At low revs and steady throttle the noise is nearly nonexistent
* The engine seems to have full power (when its not trying to die)
* It's not blowing any smoke
* under steady throttle and low revs the exhaust output seems to be even.

There we go.

I know this may be a long shot but it's all i have. Could it be a vacuum leak somewhere on the lefthand carb causing the problems?
I have a few hours on the weekend to diagnose this problem. It's the decider on whether I drive it 200km or hire a car trailer.
If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.

General_Failure Use your head, don't abuse it!

1,036 posts · joined Jun 2004 ·

#411231
so noone knows?
If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.

Southern Van Officially Full-On Dubber

243 posts · joined Apr 2004 ·

#411232
Change your username ?

General_Failure Use your head, don't abuse it!

1,036 posts · joined Jun 2004 ·

#411258
Agreed. To top things off the pivot on the falcon's clutch pedal snapped off. I'm really stuffed now!
If at first you don't succeed. Build, build again.
Vehicle: 1975 Special order delivery walkthrough panel based LCA pop-top camper. Motor: Nippon 1.8L Single port Wasserboxer, Transmission: 3 rib 002.