July 6, 2020

We're back! Thank you for your patience during the move.


PLEASE READ (click)

A noise reminiscent of valve clacking

PLACE ANY ISSUES RELATED TO HOW YOUR VAN RUNS. IF IT BOGS, HESITATES, BACKFIRES OR JUST PLAIN RUNS LIKE CRAP...THIS IS THE PLACE FOR IT!

Moderator: LiftedAWDAstro

Post Reply
astrovanfan
I am merely driving my van
I am merely driving my van
Posts: 5
Joined: Wed Oct 30, 2013 3:16 pm
antispam: No
How many wheels are on an Astro van? (4): 4
Location: Palmer Lake,CO + Los Barriles MCS Mexico

A noise reminiscent of valve clacking

Post by astrovanfan » Tue Dec 17, 2013 3:12 am

Hi Everyone, I know there are a ton of threads out there on rattling noises etc. I read em all and my sound, like valves clacking, is in some ways similar to other posts and in other ways it is not. I was hoping the great Astro minds here might help me diagnose the problem. Here goes. Any and all advice greatly appreciated.

Its a 1991 Astro AWD with about 175,000 miles. I keep her in Mexico where I have a little retirement casa. For running around town its great. After 6+ months of storage per year it starts right up and purrs like a kitten. No odd engine noises, not much smoke, uses a tiny bit of oil, good power etc EXCEPT when I go uphill under load and high rpms - then it clacks like a castanet and loses power. It sounds like valves but I'm just not sure. Oil pressure is good. Mileage is decent. Compression is ok. The Service Engine light comes on once in a while if I drive it more than 50 miles at a time. Not coming from the catyl converter. I'm thinking timing chain or a top-end job but in all honesty, I'm kinda perplexed.

Any suggestions? I'm a decent wrench (but mostly motorcycles) but I don't have access to modern mechanical facilities or code scanners. My options are a yard engine (from US), fixing this engine (parts difficult to get), letting her go to a nice Mexican family for cheap.

Cheers, Keith
1991 Astro AWD - Mexico
2000 Astro AWD - US
Ford E-350 Sportsmobile
2003 Toyota Matrix

Post Reply