Renew the lease or retire?

I have a rug cleaning or rug laundry business. In a way, it is like carpet cleaning, but instead of cleaning in the home, we clean in the plant. We can't clean carpets. Our system is based off a 10 hp electric motor for the vacuum and a 3 hp electric water pump. It is not portable. Our blower is different. It sucks about 25-30 percent harder, but can only have about a 50' hose. Carpet cleaning blowers can have 200-250' hoses. They can do about 2000 sf per hour. I can only do 1000 sf per hour.
I have an old 2003, Ford E-150 van. It isn't going to last much longer.
From 2005-2017, my weekly sales were $1,200 to $2,500. Last year they ranged from $800-1,500. I don't know why. They were worse this year. Have broken $1,000 only once. Have not broken $500 per week in sales the last 7 weeks. I cut my helpers hours and they quit. I have a small warehouse space, 1,400 sf and the annual rent is $7.50 per sf. The landlord knows I'm slow. He has lost half his tenants the past year. He offered to drop it to $7.25 if I sign a 2 year lease.
I have no idea while I'm in freefall. I'm 55. I've been in this business 38 years. I opened my own place in the fall of 2004. We're servicing the outer and middle suburbs of NYC NJ and Westchester/Hudson Valley. We used to go over to Stamford, CT for a few years, but stopped that last year.
Should I just give up? I have no clue why this happened.

Added (1). We used to do $300-500 a week wholesale for dry cleaners. We haven't done $500 all this year for dry cleaners.

Help me with car engine obd car codes?

I own a 1998 Ford Contour Sport V6 engine. It has 52,354 original miles. But I'm getting a code it's P0174 says bank 2 too lean. ( is that due to one thing or multiple things)? Also B1600 Anti theft module ignition key transponder And the last one is B1601 signal not received. I had someone do the OBD thing to my car and he wrote this all done in paper. I included a photo with the original paper he gave me Help me with car engine obd car codes

After getting an engine back together, it made it about 100 feet and overheated and seized. Is there any hope that it can be revived?

It's a Ford 300 (4.9L Inline 6). Do you think it's worth just pulling the head off and trying to free up the pistons? Since it heated up so quick would it stand to reason that it heated up in the piston area, and maybe it would only require a new piston? I appreciate any help/well wishes.

Added (1). Thank you everyone for the responses. I pulled the head off and it looks like one of the pistons is cracked and the connecting rod to that piston broke at the crankshaft. The rest of the engine rotates just fine without that piston in there. Looks like I'll replace that piston and try to figure out what went wrong.

Trump is a Racist, but hasn't everyone forgot Romney, McCain, Bush, Dole, Bush, Reagan, Ford, Nixon, Goldwater and Ike?

Well actually hasn't the race-bating started to intensified since Reagan?

How quickly we forget every 4 years and the chants and the driving narrative of the Left?

Added (1). @Grundoon,
You're making the same old defense that is part of the prevailing narrative made by the Media and Hollywood themselves.

Added (2). @ xg6 ,
Actually it began in the late 1970's, until 1965 Democrats had nothing to stand on and there was no Jessie Jackson or Al Sharptons.